PJ750-2 - ViewSonic

PJ750-2 - ViewSonic
PJ750-2
SERVICE MANUAL
Caution
Be sure to read this manual before servicing. To assure safety from fire, electric shock, injury, harmful
radiation and materials, various measures are provided in this Multimedia LCD Projector. Be sure to read
cautionary items described in the manual to maintain safety before servicing.
Service Warning
1. When replace the lamp, to avoid burns to your fingers. The lamp becomes too hot.
2. Never touch the lamp bulb with a finger or anything else. Never drop it or give it a shock. They may cause
bursting of the bulb.
3. This projector is provided with a high voltage circuit for the lamp. Do not touch the electric parts of power
unit (main), when turn on the projector.
4. Do not touch the exhaust fan, during operation.
5. The LCD module assembly is likely to be damaged. If replacing to the LCD module assembly, do not hold
the FPC of the LCD module assembly.
6. Use the cables which are included with the projector or specified.
Contents
1.
2.
3.
4.
5.
6.
7.
Features --------------------------------------------------- 2
Specifications--------------------------------------------- 2
Names of each part ------------------------------------- 3
Adjustment ------------------------------------------------ 5
Troubleshooting ---------------------------------------- 12
Service points ------------------------------------------ 17
Block diagram ------------------------------------------ 22
8. Connector connection diagram -------------------- 23
9. Wiring diagram ----------------------------------------- 24
10.Basic circuit diagram---------------------------------- 30
11.Disassembly diagram--------------------------------- 65
12.Replacement parts list ------------------------------- 67
13.RS-232C communication ---------------------------- 68
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Multimedia LCD Projector
March 2002
13. RS-232C communication
(1) Turn off the projector and computer power supplies and connect with the RS-232C cable.
(2) Turn on the computer power supply and, after the computer has started up, turn on the projector power supply.
Projector
Control jack
D-sub 15-pin shrink jack
5 4 3 2 1
10 9 8 7 6
15 14 13 12 11
Computer
1
2
3
4
5
SELO 6
RTS 7
8
9
GND 10
11
12
RD 13
TD 14
15
1
2
3
4
5
6
7
8
9
CD
RD
TD
DTR
GND
DSR
RTS
DTS
RI
RS-232C jack
D-sub 9-pin
2
1
6
3
7
4
8
5
9
Communications setting
19200bps, 8N1
1 Protocol
Consist of header (7 bytes) + command data (6 bytes).
2 Header
BE + EF + 03 + 06 + 00 + CRC_low + CRC_high.
CRC_low : Lower byte of CRC flag for command data.
CRC_high : Upper byte of CRC flag for command data.
3 Command data
Command data chart
byte_0
byte_1
byte_2
Action
low
byte_3
Type
high
low
byte_4
byte_5
Setting code
high
low
high
Action (byte_0 - 1)
Action
68
Classification
Content
1
SET
Change setting to desired value.
2
GET
Read projector internal setup value.
4
INCREMENT
Increment setup value by 1.
5
DECREMENT
Decrement setup value by 1.
6
EXECUTE
Run a command.
Requesting projector status (Get command)
(1) Send the request code Header + Command data (‘02H’+‘00H’+ type (2 bytes) +‘00H’+‘00H’) from the computer
to the projector.
(2) The projector returns the response code ‘1DH’+ data (2 bytes) to the computer.
Changing the projector settings (Set command)
(1) Send the setting code Header + Command data (‘01H’+‘00H’+ type (2 bytes) + setting code (2 bytes)) from the
computer to the projector.
(2) The projector changes the setting based on the above setting code.
(3) The projector returns the response code ‘06H’ to the computer.
Using the projector default settings (Reset Command)
(1) The computer sends the default setting code Header + Command data (‘06H’+‘00H’+ type (2 bytes)
+‘00H’+‘00H’) to the projector.
(2) The projector changes the specified setting to the default value.
(3) The projector returns the response code ‘06H’ to the computer.
Increasing the projector setting value (Increment command)
(1) The computer sends the increment code Header + Command data (‘04H’+‘00H’+ type (2 bytes) +‘00H’+‘00H’) to
the projector.
(2) The projector increases the setting value on the above setting code.
(3) The projector returns the response code ‘06H’ to the computer.
Decreasing the projector setting value (Decrement command)
(1) The computer sends the decrement code Header + Command data (‘05H’+‘00H’+ type (2 bytes) +‘00H’+‘00H’)
to the projector.
(2) The projector decreases the setting value on the above setting code.
(3) The projector returns the response code ‘06H’ to the computer.
When a command sent by the projector cannot be understood by the computer
When the command sent by the projector cannot be understood, the error command ‘15H’ is returned by the
computer. Some times, the projector ignores RS-232C commands during other works. If the error command ‘15H’ is
returned, please send the same command again.
When data sent by the projector cannot be practice
When the command sent by the projector cannot be practiced, the error code ‘1cH’ +‘xxxxH’ is returned.
When the data length is greater than indicated by the data length code, the projector will ignore the excess data code.
Conversely, when the data length is shorter than indicated by the data length code, an error code will be returned to
the projector.
NOTE:
Operation cannot be guaranteed when the projector receives an undefined command or data.
Provide an interval of at least 40ms between the response code and any other code.
The projector outputs test data when the power supply is switched ON, and when the lamp is lit. Ignore this data.
Commands are not accepted during warm-up.
69
Command data chart
Names
Blank Color
Operation type
Set
Mirror
Freeze
Startup
Language
70
Set
Set
Set
Type
Setting code
03
06 00
3B D3
01 00
00 30
00 00
Orange
BE EF
03
06 00
AB D2
01 00
00 30
01 00
Green
BE EF
03
06 00
5B D2
01 00
00 30
02 00
Blue
BE EF
03
06 00
CB D3
01 00
00 30
03 00
Purple
BE EF
03
06 00
FB D1
01 00
00 30
04 00
White
BE EF
03
06 00
6B D0
01 00
00 30
05 00
Black
BE EF
03
06 00
9B D0
01 00
00 30
06 00
BE EF
03
06 00
08 D3
02 00
00 30
00 00
Normal
BE EF
03
06 00
C7 D2
01 00
01 30
00 00
H Inverse
BE EF
03
06 00
57 D3
01 00
01 30
01 00
V lnverse
BE EF
03
06 00
A7 D3
01 00
01 30
02 00
H&V Inverse
BE EF
03
06 00
37 D2
01 00
01 30
03 00
BE EF
03
06 00
F4 D2
02 00
01 30
00 00
Normal
BE EF
03
06 00
83 D2
01 00
02 30
00 00
Freeze
BE EF
03
06 00
13 D3
01 00
02 30
01 00
BE EF
03
06 00
B0 D2
02 00
02 30
00 00
Red
BE EF
03
06 00
7F D3
01 00
03 30
00 00
Orange
BE EF
03
06 00
EF D2
01 00
03 30
01 00
Green
BE EF
03
06 00
1F D2
01 00
03 30
02 00
Blue
BE EF
03
06 00
8F D3
01 00
03 30
03 00
Purple
BE EF
03
06 00
BF D1
01 00
03 30
04 00
Transparent
BE EF
03
06 00
2F D0
01 00
03 30
05 00
Gray
BE EF
03
06 00
DF D0
01 00
03 30
06 00
Get
BE EF
03
06 00
4C D3
02 00
03 30
00 00
Turn ON
BE EF
03
06 00
0B D2
01 00
04 30
00 00
Turn OFF
BE EF
03
06 00
9B D3
01 00
04 30
01 00
Get
BE EF
03
06 00
38 D2
02 00
04 30
00 00
English
BE EF
03
06 00
F7 D3
01 00
05 30
00 00
Français
BE EF
03
06 00
67 D2
01 00
05 30
01 00
Deutsch
BE EF
03
06 00
97 D2
01 00
05 30
02 00
Español
BE EF
03
06 00
07 D3
01 00
05 30
03 00
Italiano
BE EF
03
06 00
37 D1
01 00
05 30
04 00
Norsk
BE EF
03
06 00
A7 D0
01 00
05 30
05 00
Nederlands
BE EF
03
06 00
57 D0
01 00
05 30
06 00
Português
BE EF
03
06 00
C7 D1
01 00
05 30
07 00
Japanese
BE EF
03
06 00
37 D4
01 00
05 30
08 00
Get
BE EF
03
06 00
C4 D3
02 00
05 30
00 00
Get
Menu Color
Action
BE EF
Get
Set
CRC
Red
Get
Set
Command data
Header
Command data chart
Names
Operation type
Command data
Header
CRC
Action
Type
Setting code
Get
BE EF
03
06 00
7C D2
02 00
07 30
00 00
Increment
BE EF
03
06 00
1A D2
04 00
07 30
00 00
Decrement
BE EF
03
06 00
CB D3
05 00
07 30
00 00
Get
BE EF
03
06 00
08 86
02 00
10 31
00 00
Increment
BE EF
03
06 00
6E 86
04 00
10 31
00 00
Decrement
BE EF
03
06 00
BF 87
05 00
10 31
00 00
Brightness Reset
Execute
BE EF
03
06 00
58 D3
06 00
00 70
00 00
Contrast Reset
Execute
BE EF
03
06 00
A4 D2
06 00
01 70
00 00
V.Position Reset
Execute
BE EF
03
06 00
E0 D2
06 00
02 70
00 00
H.Position Reset
Execute
BE EF
03
06 00
IC D3
06 00
03 70
00 00
H.Size Reset
Execute
BE EF
03
06 00
68 D2
06 00
04 70
00 00
Color Balance R Reset
Execute
BE EF
03
06 00
94 D3
06 00
05 70
00 00
Color Balance B Reset
Execute
BE EF
03
06 00
D0 D3
06 00
06 70
00 00
Sharpness Reset
Execute
BE EF
03
06 00
C4 D0
06 00
09 70
00 00
Color Reset
Execute
BE EF
03
06 00
80 D0
06 00
0A 70
00 00
Tint Reset
Execute
BE EF
03
06 00
7C D1
06 00
0B 70
00 00
Keystone_V Reset
Execute
BE EF
03
06 00
08 D0
06 00
0C 70
00 00
Auto
Execute
BE EF
03
06 00
91 D0
06 00
0A 20
00 00
off
BE EF
03
06 00
FB D8
01 00
20 30
00 00
on
BE EF
03
06 00
6B D9
01 00
20 30
01 00
BE EF
03
06 00
C8 D8
02 00
20 30
00 00
BE EF
03
06 00
D9 D8
02 00
20 60
00 00
Magnify
Auto off
Blank on/off
Set
Get
Error Status
Get
(Example of Return)
00 00
01 00
(Normal) (Cover-error)
04 00
(Temp-error)
Power
Volume
05 00
(Air flow-error)
03 00
(Lamp-error)
06 00
(Lamp-Time-over)
BE EF
BE EF
BE EF
03
03
03
06 00
06 00
06 00
2A D3
BA D2
19 D3
01 00
01 00
02 00
00 60
00 60
00 60
00 00
01 00
00 00
RGB1
BE EF
03
06 00
FE D2
01 00
00 20
00 00
RGB2
BE EF
03
06 00
3E D0
01 00
00 20
04 00
Video
BE EF
03
06 00
6E D3
01 00
00 20
01 00
SVideo
BE EF
03
06 00
9E D3
01 00
00 20
02 00
Component
BE EF
03
06 00
AE D1
01 00
00 20
05 00
Get
BE EF
03
06 00
CD D2
02 00
00 20
00 00
Get
BE EF
03
06 00
31 D3
02 00
01 20
00 00
Increment
BE EF
03
06 00
57 D3
04 00
01 20
00 00
Decrement
BE EF
03
06 00
86 D2
05 00
01 20
00 00
Set
OFF
ON
Get
Input Source
02 00
(Fan-error)
Set
71
Command data chart
Names
Operation type
Command data
Header
CRC
Mute
Set
Brightness
Contrast
Color
Balance R
Color
Balance B
Keystone_V
Aspect
Set
V.Position
H.Position
H.Size
H.Phase
72
Set
Type
Setting code
Normal
BE EF
03
06 00
46 D3
01 00
02 20
00 00
Mute
BE EF
03
06 00
D6 D2
01 00
02 20
01 00
Get
BE EF
03
06 00
75 D3
02 00
02 20
00 00
Get
BE EF
03
06 00
89 D2
02 00
03 20
00 00
Increment
BE EF
03
06 00
EF D2
04 00
03 20
00 00
Decrement
BE EF
03
06 00
3E D3
05 00
03 20
00 00
Get
BE EF
03
06 00
FD D3
02 00
04 20
00 00
Increment
BE EF
03
06 00
9B D3
04 00
04 20
00 00
Decrement
BE EF
03
06 00
4A D2
05 00
04 20
00 00
Get
BE EF
03
06 00
01 D2
02 00
05 20
00 00
Increment
BE EF
03
06 00
67 D2
04 00
05 20
00 00
Decrement
BE EF
03
06 00
B6 D3
05 00
05 20
00 00
Get
BE EF
03
06 00
45 D2
02 00
06 20
00 00
Increment
BE EF
03
06 00
23 D2
04 00
06 20
00 00
Decrement
BE EF
03
06 00
F2 D3
05 00
06 20
00 00
Get
BE EF
03
06 00
B9 D3
02 00
07 20
00 00
Increment
BE EF
03
06 00
DF D3
04 00
07 20
00 00
Decrement
BE EF
03
06 00
0E D2
05 00
07 20
00 00
4:3, Full
BE EF
03
06 00
9E D0
01 00
08 20
00 00
16:9
BE EF
03
06 00
0E D1
01 00
08 20
01 00
Small
BE EF
03
06 00
FE D1
01 00
08 20
02 00
BE EF
03
06 00
AD D0
02 00
08 20
00 00
Default
BE EF
03
06 00
62 D1
01 00
09 20
00 00
Bottom
BE EF
03
06 00
F2 D0
01 00
09 20
01 00
Top
BE EF
03
06 00
02 D0
01 00
09 20
02 00
Get
BE EF
03
06 00
51 D1
02 00
09 20
00 00
Get
Display
Position at
16 : 9 or Small
Action
Get
BE EF
03
06 00
0D 83
02 00
00 21
00 00
Increment
BE EF
03
06 00
6B 83
04 00
00 21
00 00
Decrement
BE EF
03
06 00
BA 82
05 00
00 21
00 00
Get
BE EF
03
06 00
F1 82
02 00
01 21
00 00
Increment
BE EF
03
06 00
97 82
04 00
01 21
00 00
Decrement
BE EF
03
06 00
46 83
05 00
01 21
00 00
Get
BE EF
03
06 00
B5 82
02 00
02 21
00 00
Increment
BE EF
03
06 00
D3 82
04 00
02 21
00 00
Decrement
BE EF
03
06 00
02 83
05 00
02 21
00 00
Get
BE EF
03
06 00
49 83
02 00
03 21
00 00
Increment
BE EF
03
06 00
2F 83
04 00
03 21
00 00
Decrement
BE EF
03
06 00
FE 82
05 00
03 21
00 00
Command data chart
Names
Operation type
Sharpness
Color
Tint
Set
Video Format
Command data
Header
CRC
Action
Type
Setting code
Get
BE EF
03
06 00
F1 72
02 00
01 22
00 00
Increment
BE EF
03
06 00
97 72
04 00
01 22
00 00
Decrement
BE EF
03
06 00
46 73
05 00
01 22
00 00
Get
BE EF
03
06 00
B5 72
02 00
02 22
00 00
Increment
BE EF
03
06 00
D3 72
04 00
02 22
00 00
Decrement
BE EF
03
06 00
02 73
05 00
02 22
00 00
Get
BE EF
03
06 00
49 73
02 00
03 22
00 00
Increment
BE EF
03
06 00
2F 73
04 00
03 22
00 00
Decrement
BE EF
03
06 00
FE 72
05 00
03 22
00 00
Auto
BE EF
03
06 00
9E 75
01 00
00 22
0A 00
NTSC
BE EF
03
06 00
FE 71
01 00
00 22
04 00
PAL
BE EF
03
06 00
6E 70
01 00
00 22
05 00
SECAM
BE EF
03
06 00
6E 75
01 00
00 22
09 00
NTSC 4.43
BE EF
03
06 00
5E 72
01 00
00 22
02 00
M-PAL
BE EF
03
06 00
FE 74
01 00
00 22
08 00
N-PAL
BE EF
03
06 00
0E 71
01 00
00 22
07 00
BE EF
03
06 00
0D 73
02 00
00 22
00 00
1080i
BE EF
03
06 00
F2 73
01 00
05 22
00 00
1035i
BE EF
03
06 00
62 72
01 00
05 22
01 00
BE EF
03
06 00
C1 73
02 00
05 22
00 00
Get
Set
HDTV
Get
73
Command data chart
Names
Sync on G
WHISPER
GAMMA
Operation type
Action
Type
Setting code
off
BE EF
03
06 00
CB D0
01 00
08 30
01 00
on
BE EF
03
06 00
5B D1
01 00
08 30
00 00
Get
BE EF
03
06 00
68 D1
02 00
08 30
00 00
NORMAL
BE EF
03
06 00
3B 23
01 00
00 33
00 00
WHISPER
BE EF
03
06 00
AB 22
01 00
00 33
01 00
Get
BE EF
03
06 00
08 23
02 00
00 33
00 00
NORMAL
BE EF
03
06 00
C7 F0
01 00
A1 30
00 00
CINEMA
BE EF
03
06 00
57 F1
01 00
A1 30
01 00
DYNAMIC
BE EF
03
06 00
A7 F1
01 00
A1 30
02 00
Get
BE EF
03
06 00
F4 F0
02 00
A1 30
00 00
NORMAL
BE EF
03
06 00
FB F5
01 00
B0 30
00 00
LOW
BE EF
03
06 00
6B F4
01 00
B0 30
01 00
BE EF
03
06 00
C8 F5
02 00
B0 30
00 00
Set
Set
Get
74
CRC
Set
Set
COLOR TEMP
Command data
Header
MEMO
75
PJ750-2
Printed in Japan (J)
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