Zenith H32H38DT Service manual

Zenith
SERVICE MANUAL
Product Type:
Chassis
Manual Part #:
Model Line:
Product Year:
Model Series:
Commercial Color TV
CL
3828VD0171F
H
2006
H27H38DT
H32H38DT
CONTENTS
General Information/Remote Controls................................ 1
Installer ’s Menu ............................................................2
Servicing/Trobleshooting ................................................ 3
Model/Module Parts List ................................................. 4
Exploded Views ............................................................. 5
Schematics ................................................................... 6
Published by
Technical Publications
Zenith Electronics Corporation
P.O. Box 240007
Huntsville, Al 35824
Copyright © March2006 by Zenith Electronics Corporation
Printed in U.S.A.
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS
IMPORTANT SAFETY NOTICE
A.C. Voltmeter
This Manual was prepared for use only by properly trained audio-visual service
technicians. When servicing this product, under no circumstances should the
original design be modified or altered without permission from LG Electronics
Corporation. All components should be replaced only with types identical to
those in the original circuit and their physical location, wiring and lead dress
must conform to original layout upon completion of repairs.
Special components are also used to prevent x-radiation, shock and fire
hazard. These components are indicated by the letter “x” included in their
component designators and are required to maintain safe performance. LG
Electronics Corporation allows no deviations without prior approval. Circuit
diagrams may occasionally differ from the actual circuit used. This way,
implementation of the latest safety and performance improvement changes
into the set is not delayed until the new service literature is printed.
CAUTION: Do not attempt to modify this product in any way. Never perform
customized installations without manufacturer’s approval. Unauthorized modifications will not only void the warranty, but may lead to property damage or
user injury.
Service work should be performed only after you are thoroughly familiar with
these safety checks and servicing guidelines.
0.15uF
Good Earth Ground
such as the Water
Pipe, Conduit, etc.
Place this probe
on each exposed
metal part.
10 WATT
X-RADIATION
1. Be sure procedures and instructions to all service personnel cover the
subject of x-radiation. The only potential source of x-rays in current TV
receivers is the picture tube. However, this tube does not emit x-rays when
the HV is at the factory-specified level. The proper value is given in the
applicable schematic. Operation at higher voltages may cause a failure of the
picture tube or high-voltage supply and, under certain circumstances may
produce radiation in excess of desirable levels.
2. Only factory-specified CRT anode connectors must be used.
3. It is essential that the service personnel have available an accurate and
reliable high-voltage meter.
4. When the high-voltage circuitry is operating properly, there is no possibility of an x-radiation problem. Every time a color chassis is serviced, the
brightness should be run up and down while monitoring the high voltage
with a meter, to be certain that the high voltage does not exceed the
specified value and that it is regulating correctly.
5. When troubleshooting and making test measurements in a product with a
problem of excessively high voltage, avoid being unnecessarily close to the
picture tube and the high voltage power supply. Do not operate the product
longer than necessary to locate the cause of excessive voltage.
6. Refer to HV, B+, and shutdown adjustment procedures described in the
appropriate schematics and diagrams (where used).
GRAPHIC SYMBOLS
The exclamation point within an equilateral triangle is intended
to alert the service personnel to important safety information in
the service literature.
The lightning flash with arrowhead symbol within an equilateral
triangle is intended to alert the service personnel to the presence
of non-insulated “dangerous voltage” that may be of sufficient
magnitude to constitute a risk of electric shock.
The pictorial representation of a fuse and its rating within an
equilateral triangle is intended to convey to the service personnel
the following fuse replacement caution notice:
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ALL FUSES WITH THE SAME TYPE AND RATING AS MARKED NEAR
EACH FUSE.
SERVICE INFORMATION
While servicing, use an isolation transformer for protection from AC line
shock. After the original service problem has been corrected, make a check of
the following:
IMPLOSION
1. All direct view picture tubes are equipped with an integral implosion
protection system; take care to avoid damage during installation.
2. Use only the recommended factory replacement tubes.
FIRE AND SHOCK HAZARD
1. Be sure that all components are positioned to avoid a possibility of
adjacent component shorts. This is especially important on items transported
to and from the repair shop.
2. Verify that all protective devices such as insulators, barriers, covers,
shields, strain reliefs, power supply cords, and other hardware have been
reinstalled per the original design. Be sure that the safety purpose of the
polarized line plug has not been defeated.
3. Soldering must be inspected to discover possible cold solder joints, solder
splashes, or sharp solder points. Be certain to remove all loose foreign
particles.
4. Check for physical evidence of damage or deterioration to parts and
components, for frayed leads or damaged insulation (including the AC cord),
and replace if necessary.
5. No lead or component should touch a receiving tube or a resistor rated at
1 watt or more. Lead tension around protruding metal surfaces must be
avoided.
6. After re-assembly of the set, always perform an AC leakage test on all exposed
metallic parts of the cabinet (the channel selector knobs, antenna terminals,
handle and screws) to be sure that set is safe to operate without danger of
electrical shock. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST.
Use an AC voltmeter having 5000 ohms per volt or more sensitivity in the
following manner: Connect a 1500 ohm, 10 watt resistor, paralleled by .15 mfd
150V AC type capacitor between a known good earth ground (water pipe,
conduit, etc.) and the exposed metallic parts, one at a time. Measure the AC
voltage across the combination of 1500 ohm resistor and .15mfd capacitor.
Reverse the AC plug by using a non-polarized adaptor and repeat AC voltage
measurements for each exposed metallic part. Voltage measured must not
exceed 0.75 volts RMS. This corresponds to 0.5 milliamp AC. Any value
exceeding this limit constitutes a potential shock hazard and must be corrected immediately.
3828VD0171F
1500 OHM
TIPS ON PROPER INSTALLATION
1. Never install any receiver in a closed-in recess, cubbyhole, or closely fitting
shelf space over, or close to, a heat duct, or in the path of heated air flow.
2. Avoid conditions of high humidity such as: outdoor patio installations
where dew is a factor, near steam radiators where steam leakage is a factor,
etc.
3. Avoid placement where draperies may obstruct venting. The customer
should also avoid the use of decorative scarves or other coverings that
might obstruct ventilation.
4. Wall- and shelf-mounted installations using a commercial mounting kit must
follow the factory-approved mounting instructions. A product mounted to
a shelf or platform must retain its original feet (or the equivalent thickness
in spacers) to provide adequate airflow across the bottom. Bolts or screws
used for fasteners must not touch any parts or wiring. Perform leakage tests
on customized installations.
5. Caution customers against mounting a product on a sloping shelf or in a
tilted position, unless the receiver is properly secured.
6. A product on a roll-about cart should be stable in its mounting to the cart.
Caution the customer on the hazards of trying to roll a cart with small
casters across thresholds or deep pile carpets.
7. Caution customers against using a cart or stand that has not been listed by
Underwriters Laboratories, Inc. for use with its specific model of television
receiver or generically approved for use with TVs of the same or larger screen
size.
8. Caution customers against using extension cords. Explain that a forest of
extensions, sprouting from a single outlet, can lead to disastrous consequences to home and family.
i
DIGITAL CL - SAFETY
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS
Observe the anode voltage meter reading and compare with the
table below for the proper CRT screen size. If the voltage reading
is higher than the maximum, verify circuit component values and
proper operation.
X-RADIATION
To prevent possible exposure to x-radiation caused by excessive CRT
anode voltage, the Digital CL chassis incorporate a “High Voltage
Shutdown” circuit. This circuit senses the level of a flyback pulse
from the “Flyback Transformer” representative of the actual high
voltage on the CRT anode. When this level exceeds a predetermined
voltage, the circuit shuts down the TV set, preventing further generafurther generation of anode voltage.
CRT Anode Voltage
CRT Screen Size Nominal Anode Voltage Max. Shutdown Voltage
27"
SHUTDOWN CIRCUIT OPERATION
The flyback pulse voltage from pin 10 of T402 (Flyback Transformer)
is peak detected (rectified) by the action of diode D444 and capacitor C450. This form a DC voltage appearing on C450 representative of the CRT anode voltage (HV) produced by T402. This voltage
is divided down by precision resistors R419, R423, R420 and R424.
This lower voltage appears on the zener diode ZDX447; when this
voltage exceeds by 0.7 Vdc the “zener voltage” Q403 enters in
saturation mode end then the HV shutdown occurs (pin 49 of
IC100).
(KV)
36
COMPONENTS WITH ANY INFLUENCE
IN HV INCREASE
Fly-Back Transformer
Deflection Yoke
CX404
CX406
CX405
CRT ANODE HIGH VOLTAGE MEASUREMENT PROCEDURE
ICX3751
Each CRT screen size has it’s own safe operating anode and
shutdown voltage. Critical safety component (designated with
an ‘X’ in the component designator) are designed to operate the
CRT at a safe operating anode voltage and provide proper shutdown thresholds. If replacement of any of these components
are deemed necessary, it is important to use original type LG
Electronics components. After replacement is made, confirm
proper anode voltage using the following procedure.
HV SHUTDOWN PROCEDURE.
·After discharging the CRT, connect a high impedance-high voltage meter to the CRT anode
·Remove jumper wire from RX3750.
·Connect a variable Resistor (1 Mohm) in location RX3750.
·Access Video Menu and adjust Brightness and Contrast controls
for minimum screen luminance (beam current to 0 mA).
·Wait until the Video Menu or display disappear.
·Increase (from zero) slowly the resistance value until shutdown
occurs.
·Measure High Voltage shutdown.
Measurement of the CRT anode voltage must be performed using a
high impedance-high voltage meter, with no raster on the screen,
and operating at nominal horizontal frequency, 15.75 Khz (NTSC
signal).
After discharging the CRT, connect a high impedance-high voltage
meter to the CRT anode. Turn the television ‘on’ and confirm a good
signal is being displayed. Reduce Brightness and Contrast settings
until the picture is well extinguished.
3828VD0171F
(KV)
30 ± 1.0
ii
DIGITAL CL - SAFETY
INSTALLERS MENU
Use the Installer Menu to set up or change operational settings.
See detailed descriptions of the Installer Menu items on the following pages
Installer’s menu items can be
accessed by using the optional
installer’s remote control. Just
press and hold MENU (about 8
seconds) until the menu disappears, then press 9, 8, 7, 6,
then ENTER. To remove the
Installer’s Menu, press ENTER
repeatedly. Any changes you
make will be stored in nonvolatile memory.
The Installer’s menu opens with
the main menu. Use MENU and
SELECT to sequence through the
installer menus and submenus.
Use SELECT or TV/FM to scroll
up/down in the menus and sub-
Menu Function
Item
Value
Range
menus. To change a setting use
the Left/Right ADJ keys. Press
ENTER to return to main menu.
Using the Installer’s Menu
Items 0-I - 103-I are accessible
only in the Installer’s Menu.
Their numbers, descriptions,
ranges, factory default settings,
and a place for listing any
changes made on site are given
below and on the following
pages.
The Factory Menu that is intended for qualified service technicians only, is not shown. XX-F
Menu Items (not shown here)
Default
Value
are service type adjustments and
only qualified technicians having specialized test equipment
should access them.
INSTALLERS
INSTALLERS1
4
INSTALLERS2
INSTALLERS3
INSTALLERS4
INSTALLERS5
INSTALLERS6
INSTALLERS7
TV MICRO V2.08
D2A CARD V2.05
D2A CARD 3-4 MICRO COMM
STATUS
OK
Typical Installer Menu
Brief Description of Function and Comments
0-I.
INSTALLER SEQ
0-3
0
Leave default set at 0.
1-I.
POWER MANAGE
0-7
0
Sets number of hours of no activity before auto shutoff.
2-I.
AC ON
0/1
0
Set to 1 to enable auto turn on at power up.
3-I.
BAND-AFC
0-7
0
Sets Tuning band.
4-I.
STRT CHANNEL
0 - 255
255
Channel at turn-on (255 for last Channel). For digital
channels, use with item 101-I Start Minor Channel.
5-I.
CHAN LOCK
0/1
0
When set to 1, cannot tune from current channel.
6-I.
GHOST CH
0/1
0
Set to 1 to enable Ghost Channel display.
7-I.
START VOLUME
0-63, 255
255
Volume level at TV turn-on (Set 255 to retain last level).
8-I.
MIN VOLUME
0 - 63
0
Minimum volume setting.
9-I.
MAX VOLUME
0 - 63
63
Maximum volume setting.
10-I. MUTE DISABLE
0/1
0
Set to 1 to disable mute function.
11-I. KEY DEFEAT
0/ 1
1
Set to 1 to disable the front panel keyboard MENU key.
0/1
0
Puts TV On-Off event in Ch Up/Down sequence.
15-I. SLEEP TIMER
0/1
1
Set to 1 to enable Sleep Timer.
16-I. EN TIMER
0/1
1
Set to 1 to enable Timer.
17-I. ALARM
0/1
1
Set to 1 to enable Alarm.
0/1
1
Zen 1 Leave default set 1 (1 Zen1).
12-I. NOT USED
13-I. SCAN MODE
14-I. NOT USED
18-I. NOT USED
19-I. NOT USED
20-I. FEATURE LEVEL
21-I. V-CHIP
0/1
1
Set to 1 to enable V-Chip (Parental Control).
22-I. MAX BLK HRS
0 - 99
12
Sets number of Parental Control blocking hours.
23-I. CAPTION LOCK
0/1
0
Set to 1 to retain caption setting at turn off.
24-I. TEXT MODE
0/1
1
Set to 1 to add Text option to closed caption menu.
25-I. FUNCTION PRE.
0-3
0
Controls channel preview in Pay-Per-View function menu.
3828VD0171F
2-1
DIGITAL CL - INSTALLERS MENU
INSTALLERS MENU
Installer Menu Items 26-I through 63-I
Menu Function
Item
Value
Range
Default
Value
Brief Description of Function and Comments
28-I. CH OVER RIDE
0/1
1
When set to 0, limits direct access to favorite channels
and locks Auto Program.
29-I. OLD OCV
0/1
0
OCV should set to 1.
30-I. ACK MASK
0/1
0
M.P.I. communication parameter.
31-I. POLL RATE
20 - 169
94
M.P.I. communication parameter.
32-I. TIMING PULSE
186 - 227
204
M.P.I . communication parameter.
34-I. CAMPORT EN
0/1
1
Set to 1 to enable the front AUX (Camport ) input.
35-I. SUP. PORT YUV
0/1
0
Reserved for future use.
36-I. FRNT Y-C EN
0/1
1
Set to 1 to enable the front S-Video input.
37-I. REAR Y-C EN
0/1
1
Set to 1 to enable the rear S- Video input.
38-I. YPRPB EN
0/1
1
Set to 1 to enable the component input.
39-I. REAR VIDEO EN
0/1
1
Set to 1 to enable rear AUX video input.
40-I. AUTO CAMPORT
0/1
1
Set to 1 to automatically switch to Camport.
0/1
1
Set to 1 to automatically switch to front S-Video input.
0-2, 255
255
Sets the starting AUX source.
0/1
0
Set to 1 for M.P.I. AUX source reported as Channel
number instead of Channel 0.
26-I. NOT USED
27-I. NOT USED
33-I. NOT USED
41-I. NOT USED
42-I. AUTO FRNT Y-C
43-I. NOT USED
44-I. NOT USED
45-I. NOT USED
46-I. STRT AUX SRCE
47-I. AUX STATUS
3828VD0171F
48-I. DIS SETUP M
0/1
0
Set to 1 to disable Setup menu.
49-I. DIS AUDIO M
0/1
0
Set to 1 to disable Audio menu.
50-I. DIS VIDEO M
0/1
0
Set to 1 to disable Video menu.
51-I. DIS VCHIP M
0/1
0
Set to 1 to disable V-Chip (Parental Control) menu.
52-I. DIS SOURCE M
0/1
0
Set to 1 to disable Source menu.
53-I. DIS CHTIME M
0/1
0
Set to 1 to disable Channel-Time on-screen display.
54-I. EN SET COL
0/1
0
Set to 1 to enable custom color for the Setup menu.
55-I. FOR SETUP M
0-7
6
Custom foreground color for the Setup menu.
56-I. BCK SETUP M
0-7
4
Custom background color for the Setup menu.
57-I. EN AUDIO COL
0/1
0
Set to 1 to enable custom color for the Audio menu.
58-I. FOR AUDIO M
0-7
3
Custom foreground color for the Audio menu.
59-I. BCK AUDIO M
0-7
5
Custom background color for the Audio menu.
60-I. EN VIDEO COL
0/1
0
Set to 1 to enable custom color for the Video menu.
61-I. FOR VIDEO M
0-7
4
Custom foreground color for the Video menu.
62-I. BCK VIDEO M
0-7
7
Custom background color for the Video menu.
63-I. EN PTL COL
0/1
0
Set to 1 to enable custom color for the V-Chip
(Parental Control) menu.
2-2
DIGITAL CL - INSTALLERS MENU
INSTALLERS MENU
Installer Menu Items 64-I through 88-I
Menu Function
Item
Value
Range
Default
Value
Brief Description of Function and Comments
64-I. FOR PTL M
0-7
6
Custom foreground color for the V-Chip
(Parental Control) menu.
65-I. BCK PTL M
0-7
4
Custom background color for the V-Chip
(Parental Control) menu.
66-I. EN SRC COL
0/1
0
Set to 1 to enable custom color for the Source menu.
67-I. FOR SRC M
0/7
3
Custom foreground color for the Source menu.
68-I. BCK SRC M
0-7
4
Custom background color for the Source menu.
69-I. EN CHT COL
0/1
1
Set to 1 to enable custom color for the
Channel-Time on-screen display.
70-I. FOR CHT COL
0-7
1
Custom foreground color for the Channel-Time display.
71-I. BCK CHT COL
0-7
1
Custom background color for the Channel-Time display.
73-I. CH NOT AVBLE
0/1
0
When set to 1 and channel over ride is set to 0,
“NOT AVAILABLE” message is displayed when directly
accessing a channel not in the favorite channel list.
74-I. CH-TIME SIZE
0/1
0
When set to 1 and transparent background is selected
for Channel-Time display, (foreground color =
background color and custom color enabled) a large
channel number is displayed instead of the normal
Channel-Time on-screen display.
75-I. REVERT CH
0/1
0
When set to 1 and loss of M.P.I. communication occurs,
TV tunes to Start Channel.
76-I. DEFEAT XDS
0/1
0
When set to 1, XDS display program information
will not appear.
78-I. UPN MSB
0 - 255
XX
User programmable number, most significant byte.
(Line - Day)
79-I. UPN MSB1
0 - 255
XX
User programmable number, most significant byte- 1.
(Week)
80-I. UPN MSB2
0 - 255
XX
User programmable number, most significant byte- 2.
(SN - HIGH)
81-I. UPN LSB
0 - 255
X
User programmable number, least significant byte.
(SN - LOW)
82-I. CHKSM ERROR
0/1
1
Enforces rigid M.P.I. checksum.
83-I. HANDSHK TIME
0-5
0
Relaxes M.P.I. timing to be compatible with
PC based Windows controlled systems.
84-I. PERMANENT BLK
0/1
0
Set to 1 to remove block hours setting for
Parental Control and make blocks permanent.
85-I. A MUTE TIME
0 - 254
35
Controls muting audio delay time when switching
between AUX sources.
86-I. V MUTE TIME
0 - 254
40
Controls muting video delay time when switching
between AUX sources.
0/1
1
When set to 1, the audio signal volume is limited to
a minimum value if no signal is being received from
the broadcaster.
72-I. NOT USED
77-I. NOT USED
87-I. NOT USED
88-I. EN NOISE MUTE
3828VD0171F
2-3
DIGITAL CL - INSTALLERS MENU
INSTALLERS MENU
Installer Menu Items 89-I through 103-I
Menu Function
Item
Value
Range
Default
Value
Brief Description of Function and Comments
89-I. POKE ENABLE
0/1
0
When set to 1, writing to Non - volatile memory
through M.P.I. is enabled.
90-I. KEY LOCK
0/1
0
When set to 1, front keyboard functionality is disabled.
0/1
1
When set to 1, Audio Mode Information is enabled to
appear in the Channel Time Display.
100-I. ATSC TUNE MD
0/1
0
Sets ATSC tuning mode. Set to 0 for virtual channel,
set to 1 for physical channel.
101-I. STRT MINOR CH
0 ~ 255
0
Sets the starting minor channel. For NTSC set to 0.
If not 0, sets minor channel number. Set to 255 to
show last tuned channel at turn on.
0/1
0
Set to 1, to retain current aspect ratio at turn off.
At turn on, last set aspect ratio will be used. Set to 0 to
reset picture aspect ratio to default at TV turn on.
91-I. NOT USED
92-I. NOT USED
93-I. NOT USED
94-I. NOT USED
95-I. AUDIO MD DISP
96-I. NOT USED
97-I. NOT USED
98-I. NOT USED
99-I. NOT USED
102-I. NOT USED
103-I. A RATIO LOCK
Detailed Descriptions of Installer
Menu Items
0-I. INSTALLER SEQUENCE
Gives access to Installer Menu depending on the
code selected.
0 = 9876
1 = 4321
2 = 1478
3 = 3698
1-I. POWER MANAGE (Power Management)
Determines hours of no activity before automatic
shutoff. The POWER MANAGE function is for saving
energy. When set to 0, Power Manage is OFF.
Settings range from 0 - 7, with 1 - 7 representing
the hours that the TV will remain on, unless there
has been activity from either the control panel or
remote control.
*M.P.I. Multiple Protocol Input: LG protocol for
remote control of TV through RJ11 (M.P.I.) jack on
TV connections panel.
2-I. AC ON (AC Power Switchable)
Allows the TV to turn ON just by applying AC
3828VD0171F
2-4
power. Pressing the ON button is not necessary.
This is desirable when the TV is plugged into a
cable box or a power outlet controlled by a wall
switch. Use ADJ to select 0 or 1, where 0 is the
default is OFF, and 1 is ON.
Note: When set to 1 (ON), the TV does not
respond to ON/OFF commands from either the
remote or the control panel, and the SLEEP TIMER
is also not functional.
3-I. BAND/AFC (Band/Automatic Frequency
Control)
There are 8 possible settings for this option:
0 = Broadcast Fixed 4 = Broadcast AFC
5 = CATV Fixed
1 = CATV AFC
6 = HRC Fixed
2 = HRC AFC
7 = ICC Fixed
3 = ICC AFC
Channels are accessed faster when fixed modes are
used. The AFC (search modes) should only be used
when some channels are not on nominal frequencies. Note: BAND is automatically set by AUTO
DIGITAL CL - INSTALLERS MENU
INSTALLERS MENU
Detailed Descriptions for Installer Menu Items 4-I through 13-I
PROGRAM. If some channels were not found by
AUTO PROGRAM, select the appropriate AFC setting
here and add the channels using the
ADD/DEL/BLNK option in the Setup Menu.
4-I. STRT CHANNEL (Start Channel)
Important: For NTSC start channel, item
101-I STRT MINOR CHANNEL, must be set to
0. When active, this function allows you to
determine the initial channel number when the TV
is turned ON. (To set a digital channel, use with
Item 101 Start Minor Channel.) This feature is useful for an in-house information channel, since the
TV would always select that channel when it is
turned on. Setting this to 255 causes the last
channel viewed when TV was turned Off to be the
tuned to channel when the TV is turned On again.
The range of values is 0 - 255. Use ADJ (Adjust)
keys to choose numbers for the start channel. Start
Channel should be a channel with an active signal.
5-I. CHAN LOCK (Channel Lock)
CHAN LOCK is ideal if a cable box (or similar) is
the sole source for programming—and the TV must
always be on the same channel. Changing channels
with Channel Up/Down or keypad numbers is
impossible. Channel Lock is inactive when set to 0
(default). Generally, this feature is used in conjunction with START CHANNEL (item 4-I.) where
the start channel may, for example, be set to 3 or
4. If the start channel is 3, then the TV will
remain on channel 3.
Note: When CHANNEL LOCK is active and CHANNEL
OVER RIDE is disabled, AUTO PROGRAM is not functional.
6-I. GHOST CH (Ghost Channel)
When set to 1, the current channel number is displayed in the upper right corner of the picture. The
number moves slightly to prevent damage to the
screen. The default is “0” or Off. Note: When captions are On, “Ghost Channel” is not displayed.
7-I. START VOLUME
This function allows the Installer to determine the
initial volume level setting when the TV is turned
ON. This feature is useful for an in-house information channel, since the TV would always select
that Volume level when it is turned on. The range
of values are 0 - 63, 255. If 255 is selected, the
current volume level will be retained in memory
3828VD0171F
when the TV is turned off. At TV turn on, Volume
level is automatically set to the previous or last
level.
8-I. MIN VOLUME (Minimum Volume)
This function determines the minimum volume
level allowable with the VOLUME (VOL) Up/Down
control. In this way, for example, someone cannot
set the sound too low to hear. The range is from 0
to 63 change values with ADJ (adjust). The factory
default is 0, which provides full range of volume
control. It may be best to set the same value on
every TV.
Note: The minimum volume level cannot have a
value setting higher than in the MAX VOLUME level
(described below).
9-I. MAX VOLUME (Maximum Volume)
This function determines the maximum volume
level allowable with the VOLUME Up/Down control.
In this way, for example, someone cannot set the
sound level high enough to disturb others. The
range is 0 to 63, with 63 as the default which
gives the user the full range of volume control.
Change values with ADJ Left/Right keys. It may be
best to set the same value on every TV.
Note: The maximum volume level cannot have a
value setting lower than the MIN VOLUME level
(See item 8 -I).
10-I. MUTE DISABLE
Enables or disables sound mute function. If set to
1, sound cannot be muted. If set to 0, sound can
be muted.
11-I. KEY DEFEAT
Enables or disables the menu key on the front
panel keyboard. Set to 0 to enable, set to 1 to disable. If set to 1, Key lock appears if MENU key on
front panel is pressed.
12-I. NOT USED
13-I. SCAN MODE
Allows variation in the On/Off setup with CHANNEL
Up/Down. You may opt for TV channels only or TV
channels + Off/On with the following settings for
Scan Mode. Scan mode Characteristics:
0 = Channel Up/Down keys Change channels only.
1 = Channel Down below the lowest channel (or
channel up higher than the highest channel) and
the TV turns off.
2-5
DIGITAL CL - INSTALLERS MENU
INSTALLERS MENU
Detailed Descriptions for Installer Menu Items 14-I through 36-I
14-I. NOT USED
15-I. SLEEP TIMER
When set to 1, the Sleep Timer feature is available
to the user (but no message is displayed prior to
turn-off). When set to 0, the Sleep Timer is not
functional.
16-I. EN. TIMER
Set to 1, On/Off Timer functions are available to
end user. Set to 0 to disable Timer functions.
Note: Clock must be set in order to use Timers.
TIP: Set Text Mode to 1 only if text is offered in
your video system.
25-I. FUNCTION PRE
Set to 0 to suppress CHANNEL PREVIEW from the
FUNCTION menu with some Pay-Per-View systems.
26-I. NOT USED
27-I. NOT USED
17-I. ALARM
Gives you the option of making the Alarm function
available to the user. Set to 1, Alarm function is
available to user. Set to 0 to disable the Alarm
function. Note: Clock must be set in order to set
the Alarm.
18-I. NOT USED
19-I. NOT USED
20-I. FEATURE LEVEL
Default set to ZEN 1 for Zenith IR remote control
operation. Set O, P LBL for Zenith Private Label IR
remote control operation. WARNING: Do not
change the default value unless you have the proper remote control to operate the TV.
21-I. V-CHIP
Set to 1 to activate V-Chip (Parental Control); have
it available to user to filter or control or restrict
programming content. Set to 0 to turn V-Chip feature off, not available to user; no programming
restrictions can be set.
22-I. MAX BLK HRS
Set 0 to 99 for the maximum V-Chip (Parental
Control) block hours. Default setup is for 12 blocking hours.
23-I. CAPTION LOCK
Set to 1 to restore previous Caption On/Off state
after TV turns Off. When set to 0, Captions are
always Off, when TV is initially turned On.
28-I. CH. OVER RIDE (Channel Override)
When set to 1, the user can select channels with
either Channel Up/Down or by direct keypad entry.
When set to 0, only those channels that are
entered for scanning may be selected by direct
keypad entry. Note: If set to 0, Auto Program is
locked; (as shown on Setup menu) channel search
is not available.
29-I. OLD OCV (On Command VideoTM)
Set to 1 for operation with systems from On
Command Corporation.
30-I. ACK MASK
M.P.I. Communication Parameter. Leave at
default setting unless changed by Pay-Per-View
provider.
31-I. POLL RATE
M.P.I. Communication Parameter. Leave at default
setting unless changed by Pay-Per-View provider.
32-I. TIMING PULSE
M.P.I. Communication Parameter. Leave at default
setting unless changed by Pay-Per-View provider.
33-I. NOT USED
34-I. CAMPORT ENABLE
Set to 1 to enable the front AUX (Camport)
input. Set to 0 to disable front AUX input.
35-I. SUP. PORT YUV
Reserved for future use.
24-I. TEXT MODE
Determines whether TEXT 1, TEXT 2, TEXT 3, or
TEXT 4 decoding is enabled when TEXT is turned on
3828VD0171F
(either from the Setup Menu or directly with CC on
the remote).
2-6
36-I. FRONT Y-C EN.
Set to 1 to enable the front S-Video input.
Set to 0 to disable front S-Video input.
DIGITAL CL - INSTALLERS MENU
INSTALLERS MENU
Detailed Descriptions for Installer Menu Items 37-I through 59-I
37-I. REAR Y-C EN.
Set to 1 to enable the rear S-Video input.
Set to 0 to disable the rear S-Video input.
51-I. DIS VCHIP M
Set to 1 to disable V-Chip menu. V-Chip menu will
not appear. Set to 0 to enable the V-Chip menu.
38-I. YPrPb EN.
Set to 1 to enable rear Component Video input. Set
to 0 to disable rear Component Video input.
52-I. DIS SOURCE M
Set to 1 to disable Source menu. Source menu will
not appear. Set to 0 to enable the Source menu.
39-I. REAR VIDEO EN.
Set to 1 to enable rear AUX (Video) input.
Set to 0 to disable rear AUX input.
53-I. DIS CH-TIME
Set to 1 to disable the Channel-Time display.
Channel-Time display will not appear.
Set to 0 to enable the Channel-Time display.
40-I. AUTO CAMPORT
Set to 1 to automatically switch to Camport when
equipment is connected to front Video input. Set
to 0 to disable front Video automatic source selection. Note: If disabled, do not connect any jacks.
41-I. NOT USED
42-I. AUTO FRONT Y-C
Set to 1 to automatically switch viewing source to
front S-Video input if equipment is connected.
Set to 0 to disable front S-Video auto source selection. Note: If disabled, do not connect any jacks.
43-I. NOT USED
44-I. NOT USED
45-I. NOT USED
46-I. STRT AUX SRCE
Sets the starting AUX source.
55-I. FOR SETUP M (Setup Menu Foreground
Color)
Set according to Color Chart.
0 = Black
1 = Red
2 = Green
3 = Yellow
4 = Blue
5 = Violet
6 = Cyan
7 = White
56-I. BCK SETUP M (Setup Menu Background
Color)
0 = Black
3 = Yellow
6 = Cyan
1 = Red
4 = Blue
7 = White
2 = Green
5 = Violet
47-I. AUX STATUS
Set to 1 for M.P.I. AUX source to be reported as a
channel number instead of channel 0. Set to 0 to
disable AUX identification change.
57-I. EN AUDIO COL
Set to 1 to enable custom color settings for the
Audio menu. Set to 0 to disable custom color settings for the Audio menu.
48-I. DIS SETUP M
Set to 1 to disable the Setup menu. Setup menu
will not appear. Set to 0 to enable the Setup
menu.
58-I. FOR AUDIO COL (Audio Menu Foreground
Color)
49-I. DIS AUDIO M
Set to 1 to disable the Audio menu. Audio menu
will not appear. Set to 0 to enable the Audio
menu.
50-I. DIS VIDEO M
Set to 1 to disable the Video menu. Video menu
will not appear. Set to 0 to enable the Video
menu.
3828VD0171F
54-I. EN SET COL
Set to 1 to enable custom color settings for the
Setup menu. Set to 0 to disable custom color settings for the Setup menu.
0 = Black
3 = Yellow
6 = Cyan
1 = Red
4 = Blue
7 = White
2 = Green
5 = Violet
59-I. BCK AUDIO COL (Audio Menu Background
Color)
0 = Black
1 = Red
2 = Green
2-7
3 = Yellow
4 = Blue
5 = Violet
6 = Cyan
7 = White
DIGITAL CL - INSTALLERS MENU
INSTALLERS MENU
Detailed Descriptions for Installer Menu Items 60-I through 75-I
60-I. EN VIDEO COL
Set to 1 to enable custom color settings for the
Video menu. Set to 0 to disable custom color settings for the Video menu.
61-I. FOR VIDEO M (Video Menu Foreground
Color)
0 = Black
3 = Yellow
6 = Cyan
1 = Red
4 = Blue
7 = White
2 = Green
5 = Violet
0 = Black
3 = Yellow
6 = Cyan
1 = Red
4 = Blue
7 = White
2 = Green
5 = Violet
69-I. EN CH-T COL
Set to 1 to enable custom color for the ChannelTime display. Set to 0 to disable custom color for
the Channel-Time display.
62-I. BCK VIDEO COL (Video Menu Background
Color)
70-I. FOR CH-T COL (Channel-Time Display
Foreground Color)
0 = Black
3 = Yellow
6 = Cyan
0 = Black
3 = Yellow
6 = Cyan
1 = Red
4 = Blue
7 = White
1 = Red
4 = Blue
7 = White
2 = Green
5 = Violet
2 = Green
5 = Violet
63-I. EN PTL COL
Set to 1 to enable custom color settings for the VChip menu. Set to 0 to disable custom color settings for the V-Chip menu.
64-I. FOR PTL M (V-Chip Menu Foreground
Color)
0 = Black
3 = Yellow
6 = Cyan
1 = Red
4 = Blue
7 = White
2 = Green
5 = Violet
0 = Black
3 = Yellow
6 = Cyan
1 = Red
4 = Blue
7 = White
2 = Green
5 = Violet
Note: If foreground and background color are the
same, menu background is transparent.
71-I. BCK CH-T COL (Channel-Time Display
Background Color)
0 = Black
3 = Yellow
6 = Cyan
1 = Red
4 = Blue
2 = Green
5 = Violet
7 = White
Note: If foreground and background color are the
same, menu background is transparent.
72-I. NOT USED
65-I. BCK PTL M (V-Chip Menu Background
Color)
73-I. CH NOT AVBLE
When set to 1 and channel override is set to 0,
“NOT AVAILABLE” message is displayed when
directly accessing a channel not in the favorite
channel list. (Applies to NTSC Channels Only.)
74-I. CH-TIME SIZE
When set to 1 and transparent background is
selected for Channel-Time display, (foreground
color = background color and custom color
enabled) a large channel number is displayed
instead of the normal Channel-Time display.
66-I. EN SRC COL
Set to 1 to enable custom color for the Source
menu. Set to 0 to disable custom color for the
Source menu.
67-I. FOR SRC M (Source Menu Foreground
Color)
0 = Black
3 = Yellow
6 = Cyan
1 = Red
4 = Blue
7 = White
2 = Green
5 = Violet
3828VD0171F
68-I. BCK SRC M (Source Menu Background
Color)
75-I. REVERT CH
When set to 1 and loss of M.P.I. communication
occurs, TV automatically tunes to the specified
Start Channel.
2-8
DIGITAL CL - INSTALLERS MENU
INSTALLERS MENU
Detailed Descriptions for Installer Menu Items 76-I through 103-I
76-I. DEFEAT XDS
Set to 1 to disable XDS display. Set to 0 to enable
XDS display. XDS data (provided at the discretion
of the broadcaster), is available only on analog
channels. After a channel change, wait 5 seconds
then press ENTER to see XDS data, if available.
77-I. NOT USED
78-I. UPN MSB
User programmable number, most significant byte
readable by M.P.I. command.
79-I. UPN MSB-1
User programmable number, most significant
byte-1 readable by M.P.I. Command.
80-I. UPN MSB-2
User programmable number, most significant
byte-2 readable by M.P.I. command.
81-I. UPN LSB
User programmable number, least significant
byte readable by M.P.I. command.
82-I. CHKSM ERROR
Enforces rigid M.P.I checksum validation.
Set to 1 for validation.
Set to 0 to turn off.
87-I. NOT USED
88-I. EN NOISE MUTE
When set to 1, the audio signal volume is limited
to a minimum value while receiving no signal from
the broadcaster.
89-I. POKE ENABLE
When set to 1, writing to Non-volatile Memory thru
M.P.I. Is enabled.
90-I. KEY LOCK
When set to 1, front keyboard functionality is disabled. When set to 0, keyboard is enabled.
91-I. NOT USED
92-I. NOT USED
93-I. NOT USED
94-I. NOT USED
95-I. AUDIO MD DISP
When set to 1, Audio Mode Information is enabled
to appear as part of the Channel-Time Display.
96-I. NOT USED
97-I. NOT USED
98-I. NOT USED
83-I. HANDSHK TIME
Adds an additional delay to the handshake time
which is 64 msec, thus relaxing M.P.I. timing
requirements to be compatible with PC based
Windows controlled systems, range is 0 - 5.
Set to 0 to retain standard 64 msec delay.
Set to 1 - 5 to increase @ 16 msec ea., the delay
up to 144 msec.
84-I. PERMANENT BLK
Allows Parental Control blocking schemes to be
permanent by removing the blocking hours function. Set to 1 to install Parental Control blocking
restrictions permanently. Set to 0 for user-specified
hours control of blocking schemes.
85-I. A MUTE TIME
Controls audio muting delay time when switching
between AUX sources. Range is 0 to 254 msec.
86-I. V MUTE TIME
Controls video muting delay time when switching
between AUX sources. Range is 0 to 254 msec.
3828VD0171F
99-I. NOT USED
100-I. ATSC TUNE MD (ATSC Tuning Mode)
Sets ATSC tuning mode. Set to 0 for virtual channel, set to 1 for physical channel.
101-I. STRT MINOR CH (Start Minor Channel)
Sets the starting minor digital channel number. For
NTSC set at 0. Not 0, sets digital minor start channel number. Used with item 4-I Start Channel. Set
the major channel number in 4-1 and the minor
digital dash number in item 101-I. At TV turn on,
start channel number is automatically tuned in.
Set to 0 if item 4-I is set to 255 for last tuned
channel.
102-I. NOT USED
103-I. A RATIO LOCK (Aspect Ratio Lock)
When set to 1, current picture aspect ratio is
retained at power off. At power on, previous
aspect ratio will be used. If set to 0, resets aspect
ratio to default setting at TV turn on.
2-9
DIGITAL CL - INSTALLERS MENU
FACTORY MENU
DEFLECTION 1
0-F VL (Vertical Linearity)
Adjust so that the boundary line between upper and
lower half is in accord with geometric horizontal center
of the CPT.
1-F VA (Vertical Amplitud)
Adjust so that the circle of a digital circle pattern may
be located within the effective screen of the CPT.
2-F SC (Vertical S-Correction)
Adjust so that all distance between each horizontal lines
are to be the same.
3-F VS (Vertical Shift)
Adjust so that the horizontal center line of a digital
circle pattern is in accord with geometric horizontal
center of the CPT.
4-F HS (Horizontal Shift)
Adjust so that the vertical center line of a digital circle
pattern is in accord with geometric vertical center of
the CPT.
13-F CRNL6 (Lower Corner(6TH))
More detail adjusts until symmetries lower corner of the
screen.
DEFLECTION 2
14-F EHTTH (EHT Compensation Threshold)
Threshold for second gains of static horizontal and
vertical EHT compensation.
15-F EHT S (EHT Static Time constant)
EHT Static time constant for horizontal and vertical
amplitude compensation.
16-F EHTV1 (Static Vertical Comp. (1st Gain))1st Gain
for Static Vertical Amplitude Compensation +/-100%,
for beam current<EHT_THRES.
17-F EHTV2 (Static Vertical Comp. (2nd Gain))
2nd Gain for Static Vertical Amplitude Compensation
+/-100%, for beam current>EHT_THRES.
18-F EHTH1 (Dynamic Horizontal Comp. (1st Gain))
1st Gain for Dynamic Horizontal Amplitude Compensation
+/-100%, for beam current<EHT_THRES.
5-F EW (Horizontal Width)
Adjust to that a digital circle pattern looks like exact
circle.
19-F EHTH2 (Dynamic Horizontal Comp. (2nd Gain))
2nd Gain for Dynamic Horizontal Amplitude Compensation
+/-100%, for beam current>EHT_THRES.
6-F ET (East-west Trapezium)
Adjust to make the length of top horizontal line same
with it of the bottom horizontal line.
20-F EHT F (EHT Dynamic Time constant)
7-F EP (East-west Parabola)
Adjust so that middle portion of the outermost left and
right vertical line looks like parallel with vertical lines
of the CPT.
8-F CRNU (Upper Corner)
Adjust until symmetries upper corners of the screen.
9-F CRNL (Lower Corner)
Adjust until symmetries lower corners of the screen.
10-F BOW
Adjust the left and right crooked line on upper and
lower side.
11-F ANGLE
Adjust the vertical slope.
TH
12-F CRNU6 (Upper Corner(6 ))
More detail adjusts until symmetries upper corner of
the screen.
3828VD0171F
21-F EHTP1 (1st Gain for Dynamic Horizontal Phase)
1st Gain for Dynamic Horizontal Phase Compensation +/
-100%, for beam current<EHT_THRES.
22-F EHTP2 (2nd Gain for Dynamic Horizontal Phase)
2nd Gain for Dynamic Horizontal Phase Compensation
+/-100%, for beam current>EHT_THRES.
23-F OSD P
Horizontal Position for menus.
VIDEO-FI 1
24-F CLMPST
Clamping Measurement Start 1. Start of Clamping
Measurement pulse for the ADC1. Range : 0 to 63.
25-F PLLTC
Horizontal PLL Time Constant. Range : 0 to 3.
26-F YC DELAYRF
Luminance Delay for RF input source. Range : -8 to 7.
2-10
DIGITAL CL - FACTORY MENU
FACTORY MENU
42-F AGCADJ1
Manual AGC Adjust for ADC1. Range : 0 to 63.
27-F TINT RF
Internal Tint Control for RF input source. Range : -128
to 127.
43-F AGCADJ2
Manual AGC Adjust for ADC2. Range : 0 to 63.
28-F SCADJ
Chroma Sub-Carrier adjust register. Range : 0 to 63.
44-F YUVMAT
Color Matrix for component input. Range : 0 to 2.
29-F AGCMD
Automatic Gain Control Method. Range : 0 to 3.
45-F YUV TINT
Tint Control for YUV input. Range : -63 to 63.
30-F ACCLIMRF
Automatic Color Control Limitation for RF input source.
Range : 0 to 31.
46-F YUV BRT
Brightness Control for YUV input. Range : -128 to 127.
31-F CLRANGE
Chroma Lock Range register. Range : 0 to 3
47-F YUV CON
Contrast Control for YUV input. Range : 0 to 63.
32-F CDYUVIN
Color Decoder YUV input. Range : 0 to 1.
48-F RG YPBPR
Red Gain offset for YPbPr input. Range : 0 to 511.
33-F CDYUVTNT
Color Decoder YUV Tint Control for YUV input Source.
Range : -256 to 255.
49-F BG YPBPR
Blue Gain offset for YPbPr input. Range : 0 to 511.
34-F DISCOMB
Disable or enable the Comb Filter. Range : 0 to 1.
50-F GG YPBPR
Green Gain offset for YPbPr input. Range :0 to 511.
35-F VDG
Vertical Difference Gain to reduce Hanging dots.
Range : 0 to 3.
51-F RC YPBPR
Red Cutoff offset for YPbPr input. Range : 0 to 511.
52-F BC YPBPR
Blue Cutoff offset for YPbPr input. Range : 0 to 511.
36-F HDG
Horizontal Difference Gain to reduce Cross-Luminance.
Range : 0 to 3.
53-F GC YPBPR
Green Cutoff Offset for YPbPr input. Range:0 to 511.
37-F VPK
Vertical Peaking Gain. Range : 0 to 15.
VIDEO-FI 3
38-F REMDEL2
Comb Filter Compensation Delay for ADC2. Range : 0
to1.
54-F YPBPROFS
Internal Brightness offset for YPbPr input. Range : 0 to
511.
VIDEO-FI 2
55-F YFDEL
Luminance/Fast Blanking Delay for YPbPr input.
Range : 0 to 127.
39-F REMDEL1
Comb Filter Compensation Delay for ADC1.
Range : 0 to 1.
56-F UVDEL
PbPr Chroma Components Delay. Range : 0 to 127.
40-F INCOMB
Comb Filter Input Select. Range : 0 to 2.
57-F USATADJ
Pb Chroma component saturation adjust. Range : 0 to
63.
41-F YCTCOMB
YC through Comb Filter. Range 0 to 1.
3828VD0171F
2-11
DIGITAL CL - FACTORY MENU
FACTORY MENU
58-F VSATADJ
Pr Chroma component saturation adjust. Range : 0 to
63.
74-F RF BLACK
Brightness register to set the initial condition for
Brightness final alignment.
59-F LPFOP
Lines per Field Output.Only used for Freerun Mode.
Range : 0 to 511.
75-F RF WHITE
Contrast register to set the initial condition for
Brightness final alignment.
60-F NAPPLOP
Not Active Pixel Per Line Output. Range : 0 to 511.
76-F BRIGHTCH
Register to tune the RF Brightness Adjust Channel.
61-F HORPOS
Horizontal Picture Position. Range : 32 to 2047.
77-F A OFFSET
Register to readjust the brightness in the CV Aux. Source.
62-F HORWIDTH
Horizontal Picture Width. Range : 0 to 2047.
78-F SVM G
Scan Velocity Modulator circuit Gain. Range : 0 to 63.
63-F VERPOS
Vertical Picture Position. Range : 0 to 1023.
79-F SVM D
Scan Velocity Modulator Delay. Delay between SVM signal
and analog RGB outputs in half clock steps.
Range : 0 to 15.
64-F VERWIDTH
Vertical Picture Width. Range : 0 to 2047.
65-F HOUTDEL
Horizontal Sync. Output Delay. Range : 0 to 322.
80-F SVM L
Scan Velocity Modulator Limiter. The SVM output signal
is limited to +/-(SVLIM+1)*2. Range : 0 to 63
66-F ON
Dynamic Contrast Improvement on/off. Range : 0 to 1.
81-F GAMMA
Gamma correction value. Range : -512 to 511.
67-F YDELMTCH
Luminance-Chrominance Delay Match. Range : -4 to 3.
82-F TML
Start Line for Tube Measurement. Range : 0 to 511.
68-F BLEMODE
Black Level Expansion Mode. Range : 0 to 3.
83-F WDRM
RGB Level for White Drive Current Measurement.
Range : 0 to 1023.
VIDEO-FI 4
VIDEO-FI 5
69-F PKCRF
Peaking Coring. Range : 0 to 31.
84-F IBRM
Internal Brightness for Measurement. Range : 0 to 511.
70-F RFPEAK
Frequency Response of video peaking filter at 5Mhz.
Range : -8 to 15.
85-F SMODE
Sense Mode.Register to toggle between SENSE pin or
RSW1 pin for BCL Measurement. Range : 0,1.
71-F RF AGC
Tuner take over point. Range : 0 to 15.
86-F CUT DIS
Register to enable or disable the Cutoff measurement
Loop.Range : 0,1.
72-F MAX CON
Register to limit the max value of Contrast Register.
Range : 0 to 63.
87-F WDR DIS
Register to enable or disable the White Drive Measurement
Loop. Range : 0,1.
73-F RF SBRT
Brightness adjust for final alignment. Range : 0 to 254.
3828VD0171F
2-12
DIGITAL CL - FACTORY MENU
FACTORY MENU
88-F ULBLK DIS
Register to toggle between Black or ultrablack during
Blanking. Range : 0,1.
103-F HBSO
Horizontal Blanking Stop. Range : 0 to 1295
104-F VBST
Vertical Blanking Start Line. Range : -127 to 343.
89-F PRED CH
Register to Choose the default channel during
Predominant Color Adjustment.
105-F VBSO
Vertical Blanking Stop Line. Range : 4 to 343.
90-F R CUT
Reference for Cutoff Red. Range : 0 to 511.
106-F OSD CNTR
Analog Contrast for OSD and external RGB.
Range : 0 to 511.
91-F B CUT
Reference for Cutoff Blue. Range : 0 to 511.
107-F OSD BRT
Analog Brightness for OSD and external RGB.
Range : -256 to 255.
92-F G CUT
Reference for Cutoff Green. Range : 0 to 511.
93-F R GAIN
Reference for White Drive Red. Range : 0 to 511.
108-F TINT AUX
Internal Tint Control for Composite Video input source.
Range : -128 to 127.
94-F B GAIN
Reference for White Drive Blue. Range : 0 to 511.
109-F TINT YC
Internal Tint Control for Luminance/Chrominance Video
input source. Range : -128 to 127.
95-F G GAIN
Reference for White Drive Green. Range : 0 to 511.
110-F ACCLIM V
Automatic Color Control Limitation for Composite Video
input source. Range : 0 to 31.
96-F CUT GAIN
Gain for Cutoff Control Loop. Range 0 to 511.
97-F WDR GAIN
Gain for White Drive Control Loop. Range : 0 to 511.
111-F IFCOMBRF
IF Compensation Filter for RF input source. With off-air
or mistuned reception, any attenuation at higher
frequencies or asymmetry around the color subcarrier is
compensated. Range : 0 to 7.
98-F BCLTHRES
Beam Current Limiter Threshold Current. Range : -4096
to 4095.
112-F IFCOMP V
IF Compensation Filter for Composite Video input
source. Any attenuation at higher frequencies or
asymmetry around the color subcarrier is compensated.
Range : 0 to 7.
VIDEO-FI 6
99-F BCLTC
Beam Current Limiter Time Constant. Range : 0 to 511.
100-F BCLMIN C
BCL Minimum Contrast. The Beam Current Limiter will
stop reducing the contrast at BCL_MIN_C level and will
continue by reducing Brightness. Range : 0 to 511.
113-F IFCOMBYC
IF Compensation Filter for Luminance/Chrominance
Video input source. Any attenuation at higher
frequencies or asymmetry around the color subcarrier is
compensated. Range : 0 to 7.
101-F NOOSDBCL
BCL function for analog RGB. Register to enable or disable
the BCL function for OSD or External RGB. Range : 0,1
VIDEO-FI 7
102-F HBST
Horizontal Blanking Start. Range : 0 to 1295.
114-F YCDELAUX
Luminance Delay for Composite Video input source.
Range : -8 to 7.
3828VD0171F
2-13
DIGITAL CL - FACTORY MENU
FACTORY MENU
VIDEO-FI 8
115-F YCDEL YC
Luminance Delay for Luminance/Chrominance Video
input source. Range : -8 to 7.
129-F PKCF YC
Peaking Filter Center Frequency for Luminance/
chrominance Video input source. Range : 0,1,2,3
116-F FIX G2
Register to set the default value of Brigh(Luma Offset)
register during G2 adjustment.
130-F LTIG YC
Luma Transient Improvement Gain for Y/C input source.
Range : 0 to 15.
117-F VAR G2
Register to set the default value of INT_BRT register
during G2 adjustment.
131-F PKCFYPRP
Peaking Filter Center Frequency for Component Video
input source. Range : 0,1,2,3
118-F NTSC C
Register to set the default value of RGB Cutoff registers
during G2 adjustment.
132-F LTIGYPRP
Luma Transient Improvement Gain for Component input
source. Range : 0 to 15.
119-F NTSC G
Register to set the default value of RGB Gain registers
during G2 adjustment.
133-F MAX BRIGTH
Register to set the high limit of the Customer Brightness
register.
120-F YPRPB C
Register to set the default value of RGB Cutoff registers
during G2 adjustment for YPbPr input source.
134-F PKC AUX
Peaking coring for Composite Video input source.
Range : 0 to 31.
121-F YPRPB G
Register to set the default value of RGB Gain registers
during G2 adjustment for YPbPr input source.
AUDIO - SW
122-F MAX COL
Register to set the high limit of the Customer Color
Register.
135-F FM AM P
Prescale for the demodulated BTSC signal.
136-F SPAT GAIN
Spatial effect high pass GAIN
123-F SUB COL
Register to set the Low Limit of the Customer Color
Register.
137-F SPAT MODE
Spatial effect mode
124-F LMIXOFS
Mixing Coefficient Offset. Amplitude offset to start
adaptive mixing. Range : 0 to 31.
138-F EFF STRGT
Spatial effect strength.
125-F PKCF RF
Peaking Filter Center Frequency for RF input source.
Range : 0,1,2,3
139-F AIR AFT
Force to AFC when Air Band is the current selection.
140-F PRESET A
Used to store audio adjustments.
126-F LTIGAIN
Luma Transient Improvement Gain for RF input source.
Range : 0 to 15.
141-F PRESET P
Used to store video adjustments.
127-F PKCF AUX
Peaking Filter Center Frequency for Composite Video
input source. Range : 0,1,2,3
142-F FACTORY
Factory Mode.
128-F LTI GAUX
Luma Transient Improvement Gain for Composite Video
input source. Range : 0 to 15.
3828VD0171F
143-F QUICK AUTOPR
Enable/Disable AFC searching when autoprogram is in
CABLE Mode.
2-14
DIGITAL CL - FACTORY MENU
FACTORY MENU
ITEM
Deflection 1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Deflection 2
15
16
17
18
19
20
21
22
23
Video-FI 1
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Video-FI 2
39
40
41
42
43
44
45
46
47
48
49
50
3828VD0171F
Register Name
Value
(dec)
VL
VA
SC
VS
HS
EW
ET
EP
CRNU
CRNL
BOW
ANGLE
CRNU6
CRNL6
EHTTH
-70
-280
140
2
-53
-66
0
-74
0
0
0
0
10
12
150
Vertical Linearity
Vertical Amplitude
S-Correction
Vertical Position
Horizontal Position
Horizontal Width
Trapezoidal
Pin Cushion
Upper Corner
Lower Corner
Bow
Angle
Upper Corner(6 TH)
Lower Corner(6 TH)
EHT Compensation Threshold
EHT S
EHTV1
EHTV2
EHTH1
EHTH2
EHT F
EHTP1
EHTP2
OSD P
100
-17
-30
-3
-10
1
0
0
0
EHT Static Time constant
Static Vertical Comp. (1 ST Gain)
Static Vertical Comp. (2 nd Gain)
Dynamic Horizontal Comp. (1 ST Gain)
Dynamic Horizontal Comp. (2 n d Gain)
EHT Dynamic Time constant
1st Gain for Dynamic Horizontal Phase
2nd Gain for Dynamic Horizontal Phase
Horizontal Position from menus
CLMPST
PLLTC
YC DELAYRF
TINT RF
SCADJ
AGCMD
ACCLIMRF
CLRANGE
CDYUVIN
CDYUVTNT
DISCOMB
VDG
HDG
VPK
REMDEL2
24
1
12
0
16
3
14
3
0
0
0
1
2
0
0
Clamping measurement Start 1
Horiz. PLL Time constant
Luma Delay for RF input.
Internal Tint control for RF input
Chroma Sub-Carrier adjust
Automatic Gain Control Methode
Automatic Color Control limitation for RF in.
Chroma Lock Range
Color Decoder YUV input
Color Decoder YUV Tint Control
Disable/enable Comb Filter
Vertical Difference gain
Horizontal Difference Gain
Vertical Peaking Gain
Comb Filter compensation delay for ADC2
REMDEL1
INCOMB
YCTCOMB
AGCADJ1
AGCADJ2
YUVMAT
YUV TINT
YUV BRT
YUV CON
RG YPBPR
BG YPBPR
GG YPBPR
0
0
0
38
32
0
0
-22
44
254
254
254
Comb Filter compensation delay for ADC1
Comb Filter input select
YC Through Comb Filter
Manual AGC adjust for ADC1
Manual AGC adjust for ADC2
Color Matrix for Component input
Tint control for YUV input
Brigthness Control for YPbPr input
Contrast Control for YPbPr input
Red gain offset for YPbPr input
Blue gain offset for YPbPr input
Green gain offset for YPbPr input
Description
2-15
DIGITAL CL - FACTORY MENU
FACTORY MENU
ITEM
Register Name
Value
(dec)
51
52
53
Video-FI
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
Video-FI
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
Video-FI
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
Video-FI
99
100
RC YPBPR
BC YPBPR
GC YPBPR
254
254
254
Red cutoff offset for YPbPr input
Blue cutoff offset for YPbPr input
Green cutoff offset for YPbPr input
YPBPROFS
YFDEL
UVDEL
USATADJ
VSATADJ
LPFOP
NAPPLOP
HORPOS
HORWIDTH
VERPOS
VERWIDTH
HOUTDEL
ON
YDELMTCH
BLEMODE
127
59
57
42
42
132
0
150
1080
1
313
296
1
4
0
Internal Brightness offset for YPbPr input
Luma/Fast blanking delay for YPbPr input
PbPr Chroma components delay
Pb Chroma component saturation adjust
Pr Chroma component saturation adjust
Lines per field output
Not active pixels per line output
Horizontal picture position
Horizontal picture width
Vertical picture position
Vertical picture width
Horizontal sync. output delay
Dynamic Contrast Improvement on/off
Luminance/chrominance Delay Match
Black Level expansion mode
PKCRF
RFPEAK
RF AGC
MAX CONT
RF SBRT
RF BLACK
RF WHITE
BRIGHTCH
A OFFSET
SVM G
SVM D
SVM L
GAMMA
TML
WDRM
31
-4
8
63
127
-146
30
11
110
12
7
27
-20
14
0
Peaking coring
Video peaking filter
Tuner take over point
Max. limit for customer contrast control
Brightness adjust for final alignment
Set the initial Brightness condition for brightness adj.
Set the initial Contrast condition for brightness adj.
Set the channel for Brightness adjustment
Composite video Brightness adjustment
SVM Gain
SVM Delay
SVM Limiter
Gamma correction Value
Start Line for Tube Measurement
RGB level for white drive current measurement
IBRM
SMODE
CUT DIS
WDR DIS
ULBLKDIS
PRED CH
R CUT
B CUT
G CUT
R GAIN
B GAIN
G GAIN
CUT GAIN
WDR GAIN
BCLTHRES
320
0
0
0
0
4
90
90
90
254
254
254
0
0
301
Internal Brightness for measurement
Sense Mode
Enable/Disable the Cutoff measurement loop
Enable/Disable the white drive measurement loop
Toggle between Black or Ultrablack during Blanking
Set the default channel during predominant color Adj.
Depend on adjustment
Depend on adjustment
Depend on adjustment
Depend on adjustment
Depend on adjustment
Depend on adjustment
Gain for Cutoff Control Loop
Gain for White Drive Control Loop
Beam Current Limiter Threshold Current
BCLTC
BCLMIN C
511
230
Beam Current Limiter Time Constant
BCL Minimum Contrast.
3828VD0171F
Description
3
4
5
6
2-16
DIGITAL CL - FACTORY MENU
FACTORY MENU
ITEM
Register Name
Value
(dec)
101
NOOSDBCL
1
HBST
HBSO
VBST
VBSO
OSD CNTR
OSD BRT
TINT AUX
TINT YC
ACCLIM V
IFCOMBRF
IFCOMB V
IFCOMBYC
1207
162
254
16
270
120
0
0
14
2
4
4
BCL function for analog RGB. Register to enable or disable the
BCL function for OSD
Horizontal Blanking Start.
Horizontal Blanking Stop
Vertical Blanking Start Line.
Vertical Blanking Stop Line
Analog Contrast for OSD and external RGB
Analog Brightness for OSD and external RGB
Internal Tint Control for Composite Video input source
Internal Tint Control for Luminance/Chrominance Videosource
Automatic Color Control Limitation for Composite Video input
IF Compensation Filter for RF input source
IF Compensation Filter for Composite Video input source
IF Compensation Filter for Luminance/Chrominance
YCDEL AUX
YCDEL YC
FIX G2
VAR G2
NSTC C
NSTC G
YPRPB C
YPRPB G
MAX COL
SUB COL
LMIXOFS
PKCF RF
LTIGAIN
PKCF AUX
LTIG AUX
14
14
127
-115
90
250
254
254
54
31
31
0
7
0
7
Luminance Delay for Composite Video input
Luminance Delay for Luminance/Chrominance
Default value of Brigh (Luma Offset) register during G2 adj
Default value of INT_BRT register during G2 adjustment.
Default value of RGB Cutoff registers during G2 adjustment.
Default value of RGB Gain registers during G2 adjustment.
Default value of RGB Cutoff registers during G2 adjustment for YPrPb
Default value of RGB Gain registers during G2 adjustment for YPrPb
set the high limit of the Customer Color Register
to set the Low Limit of the Customer Color Register
Mixing Coefficient Offset.
Peaking Filter Center Frequency for RF input
Luma Transient Improvement Gain for RF input
Peaking Filter Center Frequency for Composite Video
Luma Transient Improvement Gain for Composite Video
PKCF YV
LTIG YC
PKCFYPRP
LTIGYPRP
MAX BRIGTH
PKC AUX
0
7
0
7
40
31
Peaking Filter Center Frequency for Luminance/chrominance
Luma Transient Improvement Gain for Y/C input
Peaking Filter Center Frequency for Component Video
Luma Transient Improvement Gain for Component input
Register to set the high limit of the Customer Brightness register.
Peaking coring for Composite Video input source
FM AM P
SPAT GAIN
SPAT MODE
EFF STRGT
Prescale for the demodulated BTSC signal
Spatial effect strength
Spatial effect mode
Spatial effect high pass gain
102
103
104
105
106
107
108
109
110
111
112
113
Video-FI 7
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
Video-FI 8
129
130
131
132
133
134
Audio - SW
135
136
137
138
139
Description
AIR AFT
24
2
2
63
0
140
PRESET A
1
Used to store Audio adjustments
141
PRESET P
1
Used to store Video adjustments
142
FACTORY
0
Factory Mode
143
QUICK AUTOPR
0
Enable/Disable AFC searching when autoprogram is in CABLE mode
3828VD0171F
Force to AFC in Air Band
2-17
DIGITAL CL - FACTORY MENU
SERVICING
GENERAL INFORMATION
Servicing the Digital CL is the same as with other LG
single-board chassis. If the set is dead, first check the
standby and switched voltages. If the switched voltages do not appear, check the power “On” circuit. If
the power supply is OK and the set will turn on, the
Horizontal sweep circuit should be checked next. Is
horizontal drive available from the video processor chip.
If the sweep system does not start up, sweep-derived
voltages will not be generated.
If the sweep and high-voltage circuits are OK and video
or audio are missing, then the audio/video/tuner circuits should be checked. If the receiver is working but
some feature is not working, check the Service Menu.
Bring up the Service menu and check to be sure that all
items are set correctly.
+8VSW at ZDX3870
+5VSW at CX3856
+3.3VSW at CX3850
DD5V at C1711
D3.3V at C1752
DD2.5V at C1738
DD1.8V at C1726
C1.2V at C1719
SWEEP DERIVED VOLTAGES
Video B+ (190 VDC) at C422
+28VDC at C413
+14VDC at C415
-14VDC at C419
MODULE-LEVEL SERVICING
CRT FILAMENT
The Digital CL Chassis is Module Level repair only. Replacement modules are available on an exchange basis.
If the CRT or Video processor IC are replaced, Black/
White tracking must be reset. Refer to the Service Menus
section of this book for Black/White tracking adjustments.
When troubleshooting video circuits, remember that all
video travels through the Video/Audio switcher IC. A
defect in either of these IC’s can result in no video.
Check at pin 3 and 4 of connector CN2F5. This should
read voltages between 6.0 and 6.4 volts AC on a true
RMS meter.
SERVICING THE POWER SUPPLY
Check the standby voltages first:
+V1 at CX3456 (usually 169.7 VDC when 120 VCA)
+11VSB at CX3610
+11LSP at CX3611
+5VSB at CX3802
+3.3VSB at CX3806
+1.8VSB at CX3811
Check the following key operating signals and voltages:
Horizontal drive at pin 60.
Vertical drive at pins 84, 85.
R Out IC100 pin 76.
G Out IC100 pin 72.
B Out IC100 pin 71.
Serial clock, Serial Data pins 57 and 58 respectively
3.3VSB at pins 65, 46.
1.8VSB at pins 43, 24.
VERTICAL CIRCUIT
Check the following at IC301.
Vertical drive VA at pin 7.
Vertical drive VB at pin 6.
Vertical out at pin 5.
+14VDC at pin 1.
-14VDC at pin 4.
Check the following:
Keyboard input at IC100 pin 51.
IR input at IC100 pin 50.
Power On output at IC100 pin 49.
Check the switched voltages:
B+ (110VDC) at CX3854
+35VSW at CX3663
+33VSW at ZDX3860
+17VSW at CX3662
+14VSW after LX3851
+11VSW at ZDX3865
+9VSW at CX3865
3828VD0171F
MICRO AND VIDEO PROCESSOR IC100
HORIZONTAL CIRCUIT
Check the following:
Horizontal drive to base of R402 driver.
Driver transformer output at base of QX401.
Shutdown voltage at collector of Q403.
3-1
DIGITAL CL - SERVICING
SERVICING
SHUTDOWN CIRCUIT OPERATION
The flyback pulse voltage from pin 10 of T402 (Flyback
Transformer) is peak detected (rectified) by the action
of diode D444 and capacitor C450. This form a DC voltage appearing on C450 representative of the CRT anode
voltage (HV) produced by T402. This voltage is divided
down by precision resistors R419, R423, R420 and R424.
This lower voltage appears on the zener diode ZDX447;
when this voltage exceeds by 0.7 Vdc the “zener voltage” Q403 enters in saturation mode end then the HV
shutdown occurs (pin 49 of IC100).
Observe the anode voltage meter reading and compare
with the table below for the proper CRT screen size. If
the voltage reading is higher than the maximum, verify
circuit component values and proper operation.
CRT Anode Voltage
CRT Screen Size
27"
Nominal Anode Voltage
Max. Shutdown Voltage
(KV)
(KV)
30 ± 1.0
36
COMPONENTS WITH ANY INFLUENCE
CRT ANODE HIGH VOLTAGE MEASUREMENT
PROCEDURE
Each CRT screen size has it’s own safe operating anode and shutdown voltage. Critical safety component
(designated with an ‘X’ in the component designator) are designed to operate the CRT at a safe operating anode voltage and provide proper shutdown
thresholds. If replacement of any of these components are deemed necessary, it is important to use
original type LG Electronics components. After replacement is made, confirm proper anode voltage
using the following procedure.
Measurement of the CRT anode voltage must be performed using a high impedance-high voltage meter, with
no raster on the screen, and operating at nominal horizontal frequency, 15.75 Khz (NTSC signal).
After discharging the CRT, connect a high impedancehigh voltage meter to the CRT anode. Turn the television ‘on’ and confirm a good signal is being displayed.
Reduce Brightness and Contrast settings until the picture is well extinguished.
3828VD0171F
3-2
IN HV INCREASE
Fly-Back Transformer
Deflection Yoke
CX404
CX406
CX405
ICX3751
HV SHUTDOWN PROCEDURE.
·After discharging the CRT, connect a high impedancehigh voltage meter to the CRT anode
·Remove jumper wire from RX3750.
·Connect a variable Resistor (1 Mohm) in location RX3750.
·Access Video Menu and adjust Brightness and Contrast controls for minimum screen luminance (beam current to 0 mA).
·Wait until the Video Menu or display disappear.
·Increase (from zero) slowly the resistance value until
shutdown occurs.
·Measure High Voltage shutdown.
DIGITAL CL - SERVICING
SERVICING
This voltage varies from 1 to 30 volts depending of the
tuned channel.
IF SERVICING
RF signal path is as follows:
The first stage is the TV Tuner (TU100). This device
tunes and down converts any input channel frequency
to a fixed value of 45.75 MHZ for the Video RF carrier.
The tuner output signal is called Intermediate Frequency
(IF) and goes to a discrete amplifier (Q102) which rises
the IF amplitude by 12db approximately, this IF amplification is required to counteract the losses of the next
stage called the saw filter (U100) which is a band pass
filter with sharp out band attenuation required to prevent adjacent channel disturbances going into the IF
amplifiers in the one chip IC.
The IC100 is an all in one chip and contains all the
succeeding stages for the RF signal up to be converted
to composite video.
The IF stage is alignment free so, no adjustments are
necessary for good performance.
The precise 20.25MHZ +/- 20ppm clock frequency required for all internal conversions is obtained from the
stable crystal oscillator (X100) and carefully choice of
load capacitors C137 and C138 (22pF).
The only accessible register in the factory menu is available to adjust the TOP for the tuner AGC delay. The factory default value is “8”.
This value can be reviewed by accessing the “Factory
Menu”, then choose “VIDEO-FI 4” and check register
“71-F RF AGC 8”.
The IF stable level (due to AGC Action) is internally passed
on to the video detector, the resultant CV signal goes
to the internal Video Switch which in turn makes the
required video input selection.
Required power supplies for tuner are +5V at pin 7, +33V
at pin 9, +4.2V at pin 1.
Pin 1 is the AGC control for the tuner and its value is
variable depending of the input signal strenght, high
signal values will result in AGC voltages close to 0, low
or no signal input will result in AGC voltages close to
4.2V.
It is possible to check the tuning functionality of the
tuner device by monitoring the DC voltage at pin 2.
3828VD0171F
3-3
The IC2 control bus for the tuner is at pins 4 and 5. The
IF output is at pin 11.
G2 ADJUSTMENT
We have two methods to make this adjustment on the
field.
a) With the LG remote control (P/N: 105-201M) to make
the next steps:
1. No test pattern required.
2. The video settings s/b in preset mode.
3. Press ADJ key in remocon, to display a factory adj
menu on screen.
4. Using the Up/Down channel arrows to select “G2 AD
JUSTMENT” legend.
5. With -/+ volume arrows to show a horizontal line.
6. Adjust the G2 potentiometer to get a barely visible
horizontal line on screen.
7. Press ENTER or EXIT keys in the remote control to
exit.
b) Without the LG remocon (P/N: 105-201M) to make
G2 adj as follows:
1. Set brightness and contrast in the Video menu to
mid range.
2. Set color level minimum.
3. Connect the output of an NTSC generator to the an
tenna input on the receiver.
4. Select a color bar signal and turn color off. Adjust
the G2 control so that the range of bar pattern starts
from completely white (not overdriven) to black.
Leave visible 6 of 8 bars.
5. Return color level control to its normal setting.
FOCUS ADJUSTMENT
1. Connect the output of an NTSC generator to the an
tenna input on the receiver.
2. Select white raster pattern.
3. Push menu key of remote control to observe the OSD.
4. Adjust focus potentiometer to obtain the best focus
at letters of menu.
Compare this response with crosshatch, if necessary,
balance between OSD & Crosshatch.
DIGITAL CL - SERVICING
SERVICING
ADJUSTMENT OF RGB CUTOFF
Note: If the Main Module or the CRT has been replaced,
G2 must be readjusted before adjusting the
RGB Cutoff
1. Press INSTART KEY on 105-201M remote control to
enter to Factory Menu.
2. With Zenith Remote (P/N MBR3447CT) or LG Remote
(P/N MBR3447LG). Hold Menu button for just a sec
onds until channel will be displayed. Enters 1, 9, 3,
7 “ENTER” buttons.
3. Connect the output of an NTSC generator to the an
tenna input of the receiver. Set the generator to a
pure white signal, chroma off.
4. Set Factory menu registers #90, #91, and #92 to
adjust cutoff controls.
5. Carefully observe which color is predominant on the
CRT: Red, Green or Blue. Do not change the value of
cutoff control of this color.
6. Adjust the other two cutoff controls to obtain color
balance on the screen.
7. Select the color bars pattern from the Video genera
tor and turn the chroma off. Check that the TV set
displays 3/4 of gray scale from white to black. If
black level is too high, readjust register #73, RF Sub
Brightness don’t move #77 Aux brightness Offset
register.
8. Return the color level control to preset.
9. Disable the factory menu (Factory Mode item O must
be set to 0). Select “Preset” in the Video Menu un
der picture preference.
3828VD0171F
3-4
SWITCHING PROCESS
Video switching is done between the CV inputs, the
Y/C inputs and component inputs.
CAMPORT VIDEO enters at pin 39 of IC100.
REAR VIDEO enters at pin 38 of IC100.
IF VIDEO is switched internally on IC100.
Rear Y enters at pin 35 and C enter at pin 34
Also, Front Y enters at pin37 and Front C enters at pin
36 of IC100.
The second part of the switching is between:
YPrPb signals enter at pins 1, 3 and 5 of IC200 and
Superport “YPrPb” signals entering at pins 8, 10 and 11
of IC200.
SENSING AND PRIORITIES
The camport input always has first priority, it is sensed
directly through the microprocessor. The S-Video input
has the second level. The Y/C connector does the SVideo sensing. The third level corresponds to rear video
and antenna signal (RF), they would be selected by remote control.
DIGITAL CL - SERVICING
SERVICING
PURITY & CONVERGENCE SETUP PROCEDURE
CONVERGENCE ADJUSTMENT
1. Release locking assembly.
2. Connect crosshatch generator to the receiver and
adjust static (center) convergence as follows:
a. Adjust the 4-pole static control by moving the
two tabs separately to converge the red and
blue lines horizontally. Move the two tabs to
gether around the neck of the CRT (in a 45º
arc) from the top-dead-center position to con
verge the red and blue lines vertically.
b. After the 4-pole control has been adjusted to su
perimpose the red and blue lines on top of one
another. Use the 6-pole static adjustment to
place the converged red and blue lines over
the green line. Move the two tabs together
around the neck of the CRT (in a 30º arc) from
the top-dead-center posotion to move the lines
vertically. Adjusting the two tabs separately will
move the converged beam to the left or right.
Using a crosshatch generator capable of pro
ducing individual fields, adjust the generator
to produce a red field. Use the purity tabs to
center a red stripe.
PRELIMINARY SETUP
1. Allow the receiver to warm up for 15 to 20 minutes.
2. Degauss the CRT.
3. Connect a cross hatch generator to the receiver and
“rough in” the static (center) convergence. Follow
the Convergence Procedure.
4. Adjust for the focus.
PURITY ADJUSTMENT
1. Purity tab positioning. Set the 2 pole purity tabs
together in the 3 or 9 o’clock positions and the 4and 6-pole purity tabs together in the 12 or 6 o’clock
positions.
2. Move yoke to the maximum forward funnel position.
3. Next, switch the crosshatch generator to a red field.
4. Pull the yoke toward the rear of the CRT neck, keep
ing it centered, until a red raster is displayed.
5. If the red raster is not displayed as a pure red field,
adjusts the 2-pole purity tabs until a pure field is
obtained.
6. Check for proper yoke tilt setting.
CRT Ring Location Purity
Adjust Tabs Beam Movement
for Convergence
Wedges' Adhesive Tape (3)
Deflection Yoke
Ring
Pairs
Purity & Convergence
Magnet Assembly Unit
Movement of Red
and Blue Beams
Rotation direction
of Both Tabs
B
R
6 Pole
6 Pole
Convergence
R&B over G
Purity Magnet
B
OR
Opposite
R
B
Same
R
OR
B
B
B
4 Pole
Opposite
OR
R
4 Pole
Yoke's Glass Cloth Tape
Convergence
R over B
Same
R
B
R
R
OR
B
R
Rubber Wedges (3)
3828VD0171F
3-5
DIGITAL CL - SERVICING
SERVICING
VERTICAL-TILT WEDGE ADJUSTMENT
The vertical lines at 6 and 12 o’clock are converged by
vertically tilting the yoke and inserting a wedge at the
top of the yoke until it is firmly seated between the CRT
glass and the horizontal coils.
IMPROVING CRT CORNER PURITY
CRTs that display corner purity problems even after following the service procedures can be modified with a
picture correction kit. The purity can be improved by
placing a picture-correction magnet (included in the
kit) on the CRT funnel. Refer to the following modification steps and illustration to place the magnet properly. Fully degauss the CRT before installing correction
magnets.
HORIZONTAL-TILT WEDGE ADJUSTMENT
The vertical lines at 3 o’clock and 9 o’clock are converged by horizontally tilting the yoke and inserting a
wedge. Adjust first at 4 or 8 o’clock, whichever has the
larger space, until the wedge is firmly seated between
the CRT glass and yoke coils. Then, insert the 3rd wedge
in the remaining horizontal tilt position until it is firmly
seated between the CRT glass and yoke coils. Convergence at the 3 and 9 o’clock should be maintained during this operation.
When the 3 wedges are firmly installed and positioned
for acceptable convergence, lock the wedges in place
by applying a 2.5 inches long strip of tape across the
tabs of each wedge firmly against the CRT glass. The
CRT glass surface should be clean and free of dust and
other foreign material.
MODIFICATION
1. Place the magnet on the CRT funnel as shown in the
figure displayed below, in the quadrant exhibiting
impurity.
2. Rotate the magnet in place to the position shown
for best purity.
3. Piece a piece of 1/2” by 2” long Fiberglass tape over
the magnet to hold it in place.
4. Degauss the CRT once magnet is in place to insure
that the magnet is not over the internal magnet
shield.
Note: If the magnet is placed over the internal mag
net shield, any apparent purity correction will
disappear after degaussing. Reposition the cor
rection magnet off the internal shield and de
auss again.
UNUSUAL TILT CASE
There may be some instances where the picture tube
and yoke will require vertical tilt in the opposite (up)
direction to obtain convergence. In such cases, insert
the vertical tilt wedge at the bottom (6 o’clock) position. Follow through on the horizontal tilt adjustment
by using the 2 and 10 o’clock positions and secure wedge
with a piece of tape, as described above.
2" To 3"
MAGNET
Clamp and Screw
6 Pole Magnets
2 Pole Magnets
4 Pole Magnets
3828VD0171F
3-6
DIGITAL CL - SERVICING
H27H38DT Exploded View
1
2
REF
1
2
3
4
5
6
7
3
4
DESCRIPTION
CABINET ASSEMBLY
SPEAKER, FULLRANGE
CHASSIS ASSEMBLY KEYBOARD
WINDOW
CPT ASSEMBLY (CRT)
BACK COVER ASSEMBLY
CHASSIS ASSEMBLY MAIN
H27H38DT
3091V00B66A
120-C77G
3141VSNJ06D
3790V00711A
6335V29032A
3809V00332A
3141VMNU33F
5
6
7
8
SCALE
9
10
6
1.000
5
4
3
2
7
SCALE
3828VD0171F
1.000
1
5-1
DIGITAL CL SHEET 1
H32H38DT Exploded View
1
2
REF
1
2
3
4
5
6
7
3
4
DESCRIPTION
CABINET ASSEMBLY
SPEAKER, FULLRANGE
CHASSIS ASSEMBLY KEYBOARD
WINDOW
CPT ASSEMBLY (CRT)
BACK COVER ASSEMBLY
CHASSIS ASSEMBLY MAIN
H32H38DT
3091V00B56A
120-C77G
3141VSNJ06E
3790V00711A
6335V32012C
3809V00B09A
3141VMNU33G
5
6
7
8
SCALE
9
10
6
1.000
5
4
3
2
7
SCALE
3828VD0171F
1.000
1
5-2
DIGITAL CL SHEET 2
Microprocessor
1
2
3
4
5
6
7
8
9
10
G
F
E
D
C
B
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-1
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 1
Audio
1
2
3
4
5
6
7
8
9
10
G
F
E
D
C
B
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-2
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL
SHEET 2
Power Supply
1
2
3
4
5
6
7
8
9
10
G
F
E
D
C
B
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-3
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 3
Deflection
1
2
3
4
5
6
7
8
9
10
G
F
E
D
C
B
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-4
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 4
Tilt
1
2
3
4
5
6
7
8
9
10
G
F
E
D
C
B
OPTIONAL
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-5
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 5
MPI Card
1
2
3
4
5
6
7
8
9
10
G
F
+ 12
C ON11E1
VSB
6 6 3 0 VL0 2 811
11
1
2
+ 12 VSB
+ 5V
SB F + 5 VSB F
TP1
2
2
R4 9 9 5
10 K
1
R4 9 9 6
3 MPI_ DATA_ IN
3
1
2
470
4 MPI_ DATA_ OUT
3
C
R4 9 93
4
B
1
2
E
5
6
7
8
Q4 9 0 6
0 TR9 45 0 0 9 AA
KSC 9 4 5 C - Y
5
6
7
2
10 K
E
1
2
+ 5V
SB F
1
R4 9 9 4
2 2K
2
1
C4967
2 2 0 pF
500V
+ 5V
SB F + 5VSB F
8
2
9 + 5 VSB F
9
1
10 IR_ DATA
10
11 C LONESENSE- PTY- SELEC T
11
1
2
C4946
10 0 µ F
16 V
R4 9 9 7
10 K
R4 9 9 2
1
1
220
3
+ 5V
SB F
1
2
B
2
2
E
1
2
C ON6 E2
6 6 3 0 VL0 2 811
1
R4 9 84
1K
2
1
1
1
2
1
470
2
3
4
5
6
2
2
3
1
R4 9 82
4
1
2
1
E
B
2
3
C
9
3
4
4
5
5
6
6
2
C
Q4 9 0 3
0 TR7 3 30 0 9 AA
KSA7 33 C - Y
R4 9 8 9
1
3
C
2
22 0
2
2
6
B
7
1
8
1
R4 9 9 0
PROV
2
7
2
3
3 .3 K
R4 9 8 3
1M
470K
5
Q4 9 0 5
0 TR9 4 5 0 0 9 AA
KSC 9 4 5 C - Y
C4966
2 2 0 pF
500V
R4 9 8 7
R4 9 8 5
11
2
C
R4 9 9 1
4 .7 K
D
MPI
6 612 VEH0 0 1A
1 1
2
R49 8 6
22K
E1
Q4 9 0 4
0 TR9 4 5 0 09 AA
KSC 9 4 5 C - Y
1
C4965
2 2 0 pF
500V
8
9
10
10
11
11
B
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-6
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 6
Video Output
1
2
3
4
5
6
7
8
9
10
G
W510 0
1
2
9 71- 16
R5117
2
1
2 20
Q510 1 C
0 TR9 45 00 9AA
KSC 9 45 C - Y E
F
3
C 5114
R5115
B
2
2
1
1
1.5 K
2
150 pF
5 0V
1
+ 2 00 V
1
2
R5116
1.5K
1
2
R510 4
10
2
D510 3
0 DR2 10 0 0 9AC
B AV2 1
1
R5 12 2
1
+ 20 0V
2
IK
10 0
C N5C 2
3 66 - 9 2 1J
1
3
E
4
5
6
7
8
9
2
P/ L
1/ 2W
1
2
IC5100
4921V00163H
R510 0
11
R510 2
3
1
1
1
1
2
100
2
4
2
R510 1
5
1
3
2
3
100
4
7
4
8
R510 3
1
1
2
5
9
5
100
6
8
R510 5
9
1
2
1
100
10
2
C 5117
2
1
0 .0 1
16V
10
C 5113
0 .1
2 50 V
C 510 0
4.7 µ F
250 V
1
2
7
C 510 1
0 .1
2 50 V
2
1
8
9
+ 2 00 V
VI2
2
VI3
1
GND
VDD
R5 112
1.5K
1/ 2W
DAG1
366- 009D
VOC 3
1
1
1
1
5
6
7
C
8
10
R5 114
1
2
D5 10 1
0 DR2 10 0 0 9AC
B AV21
1
4
2
KG
2
1.5K
1/ 2W
9
3 2 V DOUB LE FOC US
12
8
2
7
1
C RT2
6 620 VB C 0 01A
2 7V SINGLE FOC US
2
2
10
1W
1
1
6
SG5
10 2
350V
5
2
6918VAX002E
2
2
2 .2 K
3W
R510 7
8
3
2
R510 6
1
1
CRT1
6 6 20 VB D0 02 A
8
11
100
HEATER
5
C 510 2
100 µ F
3 5V
C 510 3
0 .0 1
5 00 V
1
2
2
R5 12 1
C 510 4
10µ F
160 V
1
2
C 5116
1
2
1
R5108
62
2%
2
1
C 510 6
150 pF
5 0V
2
1
2
1
2
1
C 510 8
100µ F
16V
1
2
VC C
1
2
2
2
R5 110
430
1W
L5 100
1
2
1
2
1µ H
12 5- 0 22 K
2
2
C 5111
0 .0 1
5 00 V
2
12
OUTPUT- C ONT2
VM- OUTPUT
OUTPUT- B IAS
OUTPUT- C ONT1
GND
1
3
2
2
OUTPUT- GND
VC C
2
R5 10 9
330
1W
3
PRE- EMITTER
SIG- IN
2
1
D5 106
1N4 00 4 A
0 DR14 0 0 4 9AC
2
4 .7µ F
2 5 0V
2
1
1
11
PRE- B IAS
11
C 5110
10µ F
160 V
2
D510 0
TVR0 6J
0 DD0 60 00 9AC
1
2
12
10
11
9
10
DRIVE
8
9
B UFFER
7
8
( SUB )
6
7
5
6
PRE-
4
5
IC 5 101
0IZZVF0 018 A
STK3 96 - 110
3
4
B
2
1
2
3
1
1
2
C 510 7
100µ F
16V
2
1
2
2
C 510 5
100 µ F
16V
1
C 510 9
PROV
5 00 V
R5 113
1M
1/ 2 W
2
1.2M
1/ 2 W
2
2
3828VD0171F
5
2
R512 4
2
10
9
+ 2 00 V
1
7
KB
G2
100
2
7
6
2
R512 3
3
6
KR
2
12 00 pF
2 KV
1
+ 200V
2
A
350V
10
2
4
2
2
1
+ 20 0V
2
1
2
6918VAX002E
C 5 112
VOC 1
1
4
2
6918VAX002E
2
SG5 10 1
1
VOC 2
1
3
1
Iom
11
2
SG5 10 0
350V
DAG2
366- 009D
C N5F2
3 87 - new
D5 10 2
0 DR2 10 0 0 9AC
B AV2 1
HEATER
11
D
R5 111
1.5K
1/ 2W
1
TDA6 109 JF
VI1
6
6
7
2
4 9 2 0 V0 0 0 7 4 A
0 IMC RPH0 0 9 A
2
1
C NSVM
3 6 6- 92 1B
OUTPUT
AMP
OPTIONAL
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-7
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 7
Keyboard
1
2
3
4
5
6
7
8
9
10
G
F
43
43
SW7
14 0 - 3 15 A
1
MENU
MUTE
43
SW6
140 - 3 15 A
2
1
C LOSED
C APTION
43
SW5
14 0 - 315 A
2
1
VOLUME
DOWN
SW4
140 - 315 A
2
1
43
VOLUME
UP
43
SW3
14 0 - 3 15 A
2
1
C HANNEL
DOWN
SW2
14 0 - 3 15A
2
1
C HANNEL
UP
2
E
R4
1
R3
2
1
10 0
R2
2
1
330
R1
2
1
39 0
R10
2
4 30
1
2
430
POWER
+ 5V
SB
D
SHT 10
CN6K2
3 87 - A0 5 E
POWER 11
1
2
R5
1
2
220
2
KEY 3
3
TO MAIN PC B
IR 4
4
5
5
C
IR
KEY
SHT 10
SHT 10
B
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-8
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 8
Ir Led Switch
1
2
3
4
5
6
7
8
9
10
G
F
POWER
+ 5V
SB
E
LED1
4 9 3 0 V0 0 0 4 8 A
1
43
SW8
14 0 - 3 15A
L1
10 µ H
R6
2
2
1
2
IR1
1
330
1
1
2
2
IR LED
INDIC ATOR LED
C1
100 µ F
10V
6 72 6 VV0 0 0 6 H
GND
VC C
3
OUT
2
1
1
3
R7
1
D
2
B
2
4 .7 K
1
C
Q1
0 TR9 4 5 0 0 9 AA
EKSC 9 4 5 C - Y
R9
9 7 1- 16
IR
2
SHT 9
+ 5V
SB
L2
R8
1
2
1
9 7 1- 16
1
2
2
47µ H
C3
10 0 µ F
10 V
POWER
KEY
C
SHT 9
SHT 9
B
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-9
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 9
Front Jack
1
2
3
4
5
6
7
8
9
10
G
JP2
6 6 13 V0 0 0 10 B
S- VIDEO
IN
AUDIO
LEFT
IN
VIDEO
IN
F
Y
18
R17
75
E
R19
47
ZD1
0DZ910009AJ
9 .1V
1/ 2 W
MTZJ9 .1B
1
C
2
4
3
5
2
2
1
1
2
2
1
1
AUDIO
RIGHT
IN
6
7
10
R18
75
9
8
11
13
12
14
15
1
+ 5V
SB
ZD2
2
1
1
17
2
R2 1
75
R2 0
47
2
16
+ 3 .3
VSB
TP2
2
0DZ910009AJ
9 .1V
1/ 2 W
MTZJ9 .1B
1
2
R2 3
4 .7 K
1
D1
1
R2 5
4 .7 K
D2
2
2
1
2
R2 2
47
D
ZD3
0DZ910009AJ
9 .1V
1/ 2 W
MTZJ9 .1B
2
1
R2 4
2 .2K
0DD414809ED
1N4 14 8
0DD414809ED
1N4 14 8
1
2
1
C
+ 3 .3
VSB
1
1
1
2
R4 - IN
L4 - IN
FRONT- SENSE
3
2
4
C V- FRONT 3
5
4
6
Y- FRONT 5
7
6
8
8
C - FRONT 7
B
11
1
2
2
C N8 B 4
3 87 - B 0 8K
3
3
4
4
C N2 FR4
387- B 04K
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-10
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 10
PCB Layout Top
1
2
3
4
5
6
7
8
9
10
G
F
E
D
C
B
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-11
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 11
MPI
C4966
C4967
1
C4965
Q4 9 0 4
C
E
R4 9 8 7
R4 9 8 6
R4 9 8 9
R4 9 8 4
R4 9 8 2
R4 9 9 2
B
C
R4 9 9 3
B
DIREC TION
PROC ESS
REV " E"
R4 9 9 0
Q4 9 0 5
E
R4 9 9 5
R4 9 9 6
R4 9 9 1
Q4 9 0 6
C N3C OM4
W16 4
C NSVM
C ON2
C 5 10 3
R5 10 6
C 5 10 5
W5 10 0
C
C
E
W5 10 1
1
1
1
W3
W2
C N1VGA10
R5 10 7
C RT
C 5 10 0
C 5 10 2
C 5 10 7
W5 10 2
C RT2
B
C 5 10 1
SG5 10 2
R5 113
1
R5 10 4
1
1
IC 5101
REV " E"
6 8 7 0 VS2 2 3 9 E
C N1E4
C 5 110
D5 10 0
R5 111
R5 112
SG5 10 1
SG5 10 0
C 5 112
R5 114
D5 10 1
D5 10 2
D5 10 3
R5 12 4
R5 12 3
R5 12 2
C N8B 4
R17
R2 0
ZD2
R18
R7
Q1
ZD1
R2 1
R19
R2 5
1
E C B
C3
R8
C1
R2 2
R2 3
D2
GND
VC C
OUT
LED1
SW8
IR1
SW7
SW6
SW5
SW4
SW3
SW2
JP2
W1
ZD3
R6
CH
UP
CH
DOWN
VOL
VOL
MENU
C LOSED
ON/ OFF
C ON1
C N1E11
R2 4
D1
R9
C 5 10 4
IC 5100
JAN- 14 - 2 0 0 4
6870VS2239E
C 5 10 9
R10
R1
R2
R3
UP
C APTION DOWN
R4
1
C 5 113
R5 110
C N2VGA8
C 5 114
L2
R5
B
C 5 10 8
C 5 111
C N2FR4
REV " E"
C N6K2
L1
6870VS2239E
C 5 117
R5 12 1
D5 10 6
Q5 10 1
R5 117
R5 115
C 5 116
R5 10 9
L5 10 0
REV " E"
C 5 10 6
R5 10 3
DIGITAL CL SHEET 12
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
6-12
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
3828VD0171F
DAG1
C
R5 10 5
R5 10 2
C N2E6
C N5F2
R5 10 0
C N5C 2
R5 116
C
R4 9 9 4
C4946
E
R5 10 8
D
DAG2
R5 10 1
E
B
R4 9 9 7
C ON6 E2
Q4 9 0 3
R4 9 8 5
R4 9 8 3
F
10
9
8
7
6
5
4
3
2
1
1
One Panel 1st Version
G
6870VS2239E
W16 0
C ON11E1
A
B
E
One Panel 2nd Version
1
2
3
4
5
6
7
8
9
10
G
F
E
D
C
B
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-13
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 13
DTV-S
1
2
3
4
5
6
7
8
9
10
G
F
E
D
C
B
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-14
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 14
D2A POWER BOARD
1
2
3
4
5
6
7
8
9
10
G
F
E
D
C
B
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-15
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 15
TUNER INTERFACE
1
2
3
4
5
6
7
8
9
10
G
F
E
D
C
B
A
3828VD0171F
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-16
ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
DIGITAL CL SHEET 16