DJ-296T Service Notes

DJ-296T Service Notes
CIRCUIT DESCRIPTION
DJ-296T
1) Receiver System
The receiver system is a double superheterodyne system with a 30.85 MHz first IF and a 455
kHz second IF.
1. Front End
The received signal at any frequency in the 216.00 to 249.995 MHz range is passed through the
low-pass filter (L2, L3, L8, C2, C9, C10, C11, C62 and C189), high-pass filter (C56, C57,
C58, C61, L22, L25 and D15), and amplified by the RF amplifier (Q9). The signal from Q9 is
then passed through the tuning circuit (C12, C14, C65, C66, L19, L20, L21, D12, D13 and
D14) and converted into 30.85 MHz by the mixer (Q10). The tuning circuit is controlled by the
tracking voltage from the CPU (IC9) so that it is optimized for the reception frequency. The local
signal from the VCO is passed through the buffer (Q11), and supplied to the source of the mixer
(Q10). The radio uses the lower side of the superheterodyne system.
2. IF Circuit
The mixer mixes the received signal with the local signal to obtain the sum of and difference
between them. The crystal filter (XF1) selects 30.85 MHz frequency from the results and
eliminates the signals of the unwanted frequencies. The first IF amplifier (Q8) then amplifies the
signal of the selected frequency.
3. Demodulator Circuit
After the signal is amplified by the first IF amplifier (Q8), it is input to pin 16 of the demodulator
IC (IC4). The second local signal of 30.395 MHz , which is oscillated by the internal oscillation
circuit in IC4 and crystal (X2). Then, these two signals are mixed by the internal mixer in IC4 and
the result is converted into the second IF signal with a frequency of 455kHz. The second IF signal
is output from pin 3 of IC4 to the ceramic filter (FL1), where the unwanted frequency band of
that signal is eliminated, and the resulting signal is sent back to the IC4 through pin 5.
The second IF signal input via pin 5 is demodulated by the internal limiter amplifier and quadrature
detection circuit in IC4, and output as an audio signal through pin 10.
4. Audio Circuit
The audio signal from pin 10 of IC4 is compensated to the audio frequency characteristics in the
ADJUSTMENT DJ296T
1) Required Test Equipment
The following items are required to adjust radio parameters:
1. Regulated power supply
2. Digital multimeter
Supply voltage:
5 - 14 VDC
Current:
3A or more
Voltage range:
FS = Approx. 20V
Current:
10A or more
Input resistance:
High impedance
3. Oscilloscope
Measurable frequency: Audio frequency
4. Audio dummy load
Impedance:
8 ohm
Dissipation:
1W or more
Jack:
3.5 mm
5. SSG
Output frequency:
500MHz or more
Output level:
-20dBu/0.1uV - 120dBu/1V
Modulation:
AM / FM
6. Spectrum Analyzer
Measuring range:
7. Power meter
Measurable frequency: Up to 500MHz
8. Audio voltmeter
Impedance:
50 ohm, unbalanced
Measuring range:
0.1W - 10W
Measurable frequency: Up to 100kHz
Sensitivity:
9. Audio generator
10. Distortion / SINAD meter
11. Frequency counter
12. Linear detector
Up to 2 GHz or more
1mV to 10V
Output frequency:
67Hz to 10kHz
Output impedance:
600ohm, unbalanced
Measurable frequency: 1kHz
Input level:
Up to 40dB
Distortion:
1% - 100%
Measurable frequency:
Up to 500MHz
Measurable stability:
Approx. +/- 0.1 ppm
Measurable frequency:
Up to 500MHz
Characteristics:
CN:
Note
•
Standard modulation :
1 kHz +/- 3.5kHz / DEV
•
Reference sensitivity
12dB SINAD
• Specified audio output level: 200mW at 8 ohm
• Standard audio output level: 50mW at 8 ohm
• Use an RF cable (3D2W: 1m) for test equipment.
• Attach a fuse to the RF test equipment.
Flat
60dB or more
• All SSG outputs are indicated by EMF.
• Supply voltage for the transceiver: 13.8VDC
2) Adjustment Mode
The DJ-296 does not require a serviceperson to manipulate the components on the printed-circuit board, except
the trimmer when adjusting reference frequency and deviation. Most of the adjustments for the transceiver are
made by using the keys on it while the unit is in the adjustment mode.
Because the adjustment mode
temporarily uses the channels, frequency must be set on each channel before adjustments can be made. For
instructions on how to program the channels, see the “DJ -296 INSTRUCTION MANUAL” which came with
the product. In consideration of the radio environment, the frequency on each channel must be near the value
(+/- 1 MHz) listed in the table below. To enter the adjustment mode, set key lock and input 490217. Decimal
point at 100MHz and 10MHz appears in LCD. (To release the mode, set key lock and input 490217.)
Channel frequencies used in the adjustment mode
Memory Channel
1
2
Channel function
Reference frequency adjustment
High power adjustment
Frequency
223.5 MHz
223.5 MHz
3
Low power adjustment
223.5 MHz
4
Minimum frequency sensitivity adjustment
215 MHz
5
Medium frequency sensitivity adjustment
223.5 MHz
6
Maximum frequency sensitivity adjustment
240 MHz
7
S-meter ( 1 ) adjustment
223.5 MHz
8
S-meter ( FULL ) adjustment
223.5 MHz
9
Deviation
223.5 MHz
10
DTMF ( 1 ) test
223.5 MHz
11
DTMF ( D ) test
223.5 MHz
13
Tone 88.5Hz test
223.5 MHz
15
DCS code 255 test
223.5 MHz
16
Tone burst test
223.5 MHz
17
Aging (Not required to use )
223.5 MHz
Reference Frequency Adjustment
1. In the adjustment mode, select channel 1 by rotating the main tuning dial.
2. Press the PTT key to start transmission.
3. Rotate TC1 on the Main board until the value on the frequency counter matches the one displayed
on the LCD.
High Power Adjustment
1. In the adjustment mode, select channel 2 by rotating the main tuning dial.
( “L” at the upper-left of the display disappears).
2. Hold down the PTT key to start transmission.
3. While watching the reading of the TX power meter, set the output power to the value closest to 5 W
by rotating VR3 on Main board.
Low Power Adjustment
1. In the adjustment mode, select channel 3 by rotating the main tuning dial.
(“L” appears at the upper-left of the display).
2. Hold down the PTT key to start transmission.
3. While watching the reading of the TX power meter, set the output power to the value closest to 0.8 W
by rotating the main tuning dial.
4. When the PTT key is released, the output power at that time will be stored as the low power setting.
Minimum Frequency Sensitivity Adjustment
1. In the adjustment mode, select channel 4 by rotating the main tuning dial.
2. Adjust the minimum frequency sensitivity to the best tuning by rotating the main tuning dial, while F
appears after the FUNC key is pressed.
Medium Frequency Sensitivity Adjustment
1. In the adjustment mode, select channel 5 by rotating the main tuning dial.
2. Adjust the medium frequency sensitivity to the best tuning by rotating the main tuning dial, while F appears
after the FUNC key is pressed.
Maximum Frequency Sensitivity Adjustment
1. In the adjustment mode, select channel 6 by rotating the main tuning dial.
2. Adjust the maximum frequency sensitivity to the best tuning by rotating the main tuning dial, while F
appears after the FUNC key is pressed.
S-meter (1) Adjustment
1. In the adjustment mode, select channel 7 by rotating the main tuning dial.
The S-meter will show a single star.
2. Enter “0” dBu (EMF) with the transceiver tester.
3. Press the F key. The transceiver beeps indicating the new setting has been stored successfully.
S-meter (FULL)
1.In the adjustment mode, select channel 8 by rotating the main tuning dial.
The S-meter will show all six stars.
2. Enter “+20”dBu (EMF) with the transceiver tester.
3. Press the F key. The transceiver beeps indicating the new setting has been stored successfully.
Deviation
1. In the adjustment mode, select channel 9 by rotating the main tuning dial.
2. Input a 50mVrms, 1KMz signal with your transceiver tester through the external microphone jack.
3. With the tester, put the transceiver in the transmission mode.
4. Rotate the VR1 on the printed-circuit board of the transceiver until the deviation is set to 4.5KHz.
DTMF (1) Test
This function is only for checking the DTMF code, not adjusting it.
1. In the adjustment mode, select channel 10 by rotating the main tuning dial.
2. Press the PTT key. DTMF code “1” is automatically sent and you will hear the monitoring tone from
the speaker.
3. Check the deviation with the transceiver tester.
DTMF (D) Test
This function is only for checking the DTMF code, not adjusting it.
1. In the adjustment mode, select channel 11 by rotating the main tuning dial.
2. Press the PTT key. DTMF code “D” is automatically sent and you will hear the monitoring tone from
the speaker.
3. Check the deviation with the transceiver tester.
Tone 88.5Hz Test
This function is only for checking the tone encoder, not adjusting it.
1. In the adjustment mode, select channel 13 by rotating the main tuning dial.
2. Press the PTT key. An 88.5Hz tone is automatically sent.
3. Check the deviation with the transceiver tester.
DCS Code 255 Test
This function is only for checking the DCS, not adjusting it.
1. In the adjustment mode, select channel 15 by rotating the main tuning dial.
2. Press the PTT key. A 255 DCS code is automatically sent.
3. Check the deviation with the transceiver tester.
Tone Burst Test
This function is only for checking the tone burst, not adjusting it.
1.In the adjustment mode, select channel 16 by rotating the main tuning dial.
2. Press the PTT key. A 1750Hz tone burst is automatically sent.
3. Check the deviation with the transceiver tester.
Aging
Perform this aging test only when necessary.
1. In the adjustment mode, select channel 17 by rotating the main tuning dial.
The transceiver automatically repeaters transmission for a minute and reception for another minute.
SPECIFICATIONS DJ296T
GENERAL
Frequency coverage
TX: 222.000 – 224.995MHz
RX: 216.000 – 249.995MHz
Mode
F3E (FM)
Channel steps
5, 10, 12.5, 15, 20, 25, & 30KHz
Memory channels
160 channels + 1CALL channel
Antenna connector
BNC (50 ohm unbalanced)
Frequency stability
+/- 5 ppm
Microphone input impedance 2K ohm nominal
Power supply requirement
7.0 to 16.0 V DC (negative ground)
Current drain (at 13.8 V DC) 1.2 A (typical) Transmit high at 5W
200 mA (typical) Receive at 280mW
50 mA (typical) standby
20mA (typical) Battery save on
Usable temperature range -10 to +60 degrees C (14 to 140 dgrees F)
Dimensions
56 (W) * 124 (H) * 40 (D) mm (with EBP-50N)
(Projections not included)
2.2” (W) * 4.88” (H) * 1.57” (D) inches (with EBP-50N)
Weight
Approx.375g (13.2oz) (with EBP-50N)
DTMF
16 Buttons Keypad
Sub audible Tone (CTCSS) encoder/decoder installed (39tones)
Sub audible Tone (DCS) encoder/decoder installed (104codes)
TRANSMITTER
Output power
Modulation system
Spurious emissions
Max. frequency deviation
Approx. 4 .5W EBP-50N installed
Approx. 5 W 13.8 V DC
Approx 0.8 W (LOW)
Variable reactance frequency modulation
Less than -60dB
+/- 5KHz
RECEIVER
Receive system
Intermediate frequencies
Sensitivity(12dB SINAD)
Double conversion superheterodyne
1st 30.85MHz / 2nd 455kHz
Less than -12.0 dBu (0.25uV)
Selectivity
Audio output power
-6 dB : 12KHz or more
-60 dB : 26KHz or less
280 mW (typical with an 8 ohm load)
200 mW (8 ohm 10% THD)
PC
BOARD V I EW D J - 2 9 6 T
S ID E
B
PC
BOARD V I EW D J - 2 9 6 T
S ID E A
PARTS LIST DJ-296T
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Parts No.
CU3035
CU3035
CU3019
CU3016
CU3035
CU3035
CU3019
CU3035
CU3009
CU3015
CU3014
CU3001
CU3035
CU3001
CU3035
CU3035
CS0408
CU3004
CU3035
CU3020
CU3015
NC
CU3001
CU3015
CU3035
CU3023
CU3015
CU3001
CU3001
CU3015
CU3011
CU3002
CU3035
CU3047
CU3035
CU3035
CU3035
CU3001
CU3001
CU3011
CU3035
CU3035
CU3023
CU3035
CU3035
CU3035
CU0108
CU3035
CU3005
NC
NC
NC
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C1608CH1H470JT-AS
C1608JB1H102KT-AS
C1608CH1H080CT-A
C1608CH1H220JT-AS
C1608CH1H180JT-AS
C1608CH1H0R5CT-AS
C1608JB1H102KT-AS
C1608CH1H0R5CT-AS
C1608JB1H102KT-AS
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C1608CH1H0R5CT-AS
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C1608JB1H102KT-AS
C1608JB1H103KT-N
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C1608JB1H102KT-AS
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C105
C106
C107
CU3035
CU3047
CS0408
CU3019
CU3007
CU3015
CU3015
CU3109
CU3014
CU3007
NC
CU3047
CU3004
CU3004
CU3035
CU3047
CS0063
CU3001
CU3035
CU3047
CU3035
CU3013
CU3015
CU3014
CU3017
CU3002
CS0213
CU3012
CU0108
CU3035
CU3035
CU0108
CU3020
CU3101
CS0213
CU3019
CU0108
CU3035
CU3035
CE0392
CU3035
CS0408
CU3035
CU0108
CU3047
CS0408
CS0408
CU3047
CU3035
CU0108
CU3035
CS0404
CU3007
CS0408
C1608JB1H102KT-AS
C1608JB1H103KT-N
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C1608CH1H180JT-AS
C1608CH1H060CT-A
C1608JB1H103KT-N
C1608CH1H030CT-AS
C1608CH1H030CT-AS
C1608JB1H102KT-AS
C1608JB1H103KT-N
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C1608JB1H102KT-AS
C1608CH1H150JT-AS
C1608CH1H220JT-AS
C1608CH1H180JT-AS
C1608CH1H330JT-AS
C1608CH1H010CT-AS
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C1608CH1H120JT-AS
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C1608JB1H102KT-AS
C1608JB1H102KT-AS
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C1608CH1H560JT-AS
C1608JB1C473KT-NS
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C1608CH1H470JT-AS
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C1608JB1H102KT-AS
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C155
C156
C157
C158
C159
C160
C161
CU3035
CE0350
CU3035
CE0397
CU0108
CU3047
CU3035
CE0392
CU3111
CU3047
CS0408
CU3047
CU3035
CS0408
CU3111
CU3111
CU3035
CU3051
CU3051
CU3051
CU3111
CU3111
CU0108
CU3111
CE0396
CS0408
CU3111
CU3035
CU3035
CU3101
CU3111
CU0108
CU3035
CU3035
CU3047
CU3035
CU3111
CU3025
CU3041
CU3035
CU3111
CU3041
CU3111
CU3111
CU3035
CU3035
CU3038
CU3111
CU3035
CU3050
CU0108
CU3051
CU0108
CS0408
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C1608JB1H102KT-AS
C1608JB1C104KT-N
C1608JB1H332KT-NS
C1608JB1C104KT-N
C1608JB1C104KT-N
C1608JB1H102KT-AS
C1608JB1H102KT-AS
C1608JB1H182KT-AS
C1608JB1C104KT-N
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C162
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C178
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C189
CN1
CN2
CN3
D1
D2
D3
D4
D5
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
CU3023
CU3044
CU3040
CU3111
CU3047
CU3101
CU3047
CU3047
CU3047
CU3046
CU3035
CU0108
CS0408
CU3111
CU3014
CU3013
CU0108
CU3035
CU3111
CU3049
CU3035
CU3035
NC
CU3111
CU3003
CU3111
CS0398
CU3004
NC
UE0369
NC
XD0323
XD0331
XD0316
XD0331
XD0331
XD0251
XD0261
XD0323
XD0130
XD0294
XD0316
XD0316
XD0316
XD0316
XD0131
XL0036
XL0036
XL0028
XL0036
XL0036
XL0036
XL0036
NC
C1608CH1H101JT-AS
C1608JB1H562KT-NS
C1608JB1H272KT-NS
C1608JB1C104KT-N
C1608JB1H103KT-N
C1608JB1C473KT-NS
C1608JB1H103KT-N
C1608JB1H103KT-N
C1608JB1H103KT-N
C1608JB1H822KT-NS
C1608JB1H102KT-AS
LMK212BJ105KG
6MCM156MATER
C1608JB1C104KT-N
C1608CH1H180JT-AS
C1608CH1H150JT-AS
LMK212BJ105KG
C1608JB1H102KT-AS
C1608JB1C104KT-N
C1608JB1E153KT-NS
C1608JB1H102KT-AS
C1608JB1H102KT-AS
C1608JB1C104KT-N
C1608CH1H020CT-AS
C1608JB1C104KT-N
TMCP0J225MTR
C1608CH1H030CT-AS
AXN49301616
MA2S111-TX
HSU277TRF
MA2S376-TX
HSU277TRF
HSU277TRF
MA741WA TX
S3DG7
MA2S111-TX
DA204U T106
U2FWJ44N(TE12R)
MA2S376-TX
MA2S376-TX
MA2S376-TX
MA2S376-TX
1SV214 TPH4
SML-310MTT86
SML-310MTT86
BRPG1201W TR
SML-310MTT86
SML-310MTT86
SML-310MTT86
SML-310MTT86
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
D25
D26
D27
FL1
IC1
IC2
IC3
IC4
IC5
IC6
IC7
IC8
IC9
IC10
IC11
JK1
JK2
JK3
L1
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
L13
L14
L15
L18
L19
L20
L21
L22
L23
L24
L25
L26
L28
LCD1
MIC1
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
XD0332
XD0291
XD0342
XC0072
XA0449
XA0915
XA0888
XA0515
XA0210
XA0385
XA0596
XA0573
XA0916
XA0669
XA0620
UJ0046
UJ0019
UJ0022
QC0507
QKA45A
QKA65A
QC0507
QKA45A
QKA35A
QC0563
QC0533
QKA75A
QC0573
QC0573
QC0531
QC0569
QC0567
NC
QC0508
QC0568
QC0535
QC0535
QC0567
NC
QC0573
QC0540
QC0089
QC0570
EL0044
EY0017
XT0135
XE0038
XT0138
XE0034
XT0138
XU0172
XT0170
XT0172
XT0138
RB706F-40-T106
MA729-TX
1SS390 TE61
ALFCM455F=K
UPC2710T-E3
M64076AGP
XC6202P502PR
TK14521MTL
NJM2070M T1
M5222FP-600C
NJM2902V-TE1
NJM2904V-TE1
M38267M8L286GP
BR24C64F-E2
S-80845ALMP-EA9-T2
MJ82-1
HSJ1493-01-010
HSJ1102-01-540
LK16081R0K-T
MR1.5 4.5T 0.4
MR1.5 3.5T 0.4
LK16081R0K-T
MR1.5 4.5T 0.4
MR1.5 3.5T 0.4
LL1608-FH15NJ
LQN21A39NJ04
QKA75A
LL1608-FHR10J
LL1608-FHR10J
LQN21A27NJ04
LL1608-FH47NJ
LL1608-FH33NJ
LK16082R2K-T
LL1608-FH39NJ
LQN21A56NJ04
LQN21A56NJ04
LL1608-FH33NJ
LL1608-FHR10J
LQN21AR15J04
NL322522T-181JA
LL1608-FH56NJ
HT-3404
OB-27P44
2SD2216R-TX
2SK2975-T11-A
2SC5066-O(TE85L)
MRF9745T1
2SC5066-O(TE85L)
XP1501-TX
2SB766A-TX
2SC4618TLP
2SC5066-O(TE85L)
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Q10
Q11
Q12
Q13
Q14
Q15
Q16
Q17
Q18
Q19
Q20
Q21
Q22
Q23
Q24
Q25
Q26
Q27
Q28
Q29
Q30
Q31
Q32
Q33
Q34
Q35
Q36
Q37
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R16
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
XT0171
XT0171
XU0193
XT0170
XT0170
XU0193
XU0172
XT0110
XU0193
XU0197
XU0172
XU0161
XU0192
XT0135
XU0197
XU0197
XU0193
XT0095
XU0192
XU0092
XU0195
XT0135
XE0029
XT0135
XE0029
XU0194
XU0197
XT0171
RK3030
RK3034
RK3046
RK3050
RK3030
RK3067
RK3018
RK3048
RK3020
RK3018
RK3050
RK3063
RK3034
RK3026
RK3062
RK3050
RK3062
RK3062
RK3062
RK3056
RK3052
RK3058
RK0002
RK3050
RK3034
RK3042
2SC4808-TX.AR
2SC4808-TX.AR
RN1107 TE85L
2SB766A-TX
2SB766A-TX
RN1107 TE85L
XP1501-TX
2SA1036K T146Q
RN1107 TE85L
RN1111 (TE85L)
XP1501-TX
XP1114(TX)
RN2107 TE85L
2SD2216R-TX
RN1111 (TE85L)
RN1111 (TE85L)
RN1107 TE85L
2SC4081 T106R
RN2107 TE85L
UN911H-TX
RN1104 TE85L
2SD2216R-TX
2SK1580-T1
2SD2216R-TX
2SK1580-T1
RN2111 TE85L
RN1111 (TE85L)
2SC4808-TX.AR
MCR03EZHJ221
MCR03EZHJ471
MCR03EZHJ472
MCR03EZHJ103
MCR03EZHJ221
MCR03EZHJ274
MCR03EZHJ220
MCR03EZHJ682
MCR03EZHJ330
MCR03EZHJ220
MCR03EZHJ103
MCR03EZHJ124
MCR03EZHJ471
MCR03EZHJ101
MCR03EZHJ104
MCR03EZHJ103
MCR03EZHJ104
MCR03EZHJ104
MCR03EZHJ104
MCR03EZHJ333
MCR03EZHJ153
MCR03EZHJ473
ERJ6GEYJ120V
MCR03EZHJ103
MCR03EZHJ471
MCR03EZHJ222
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
R29
R30
R31
R33
R34
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
R45
R46
R47
R48
R49
R50
R51
R52
R53
R54
R55
R57
R58
R59
R60
R61
R62
R63
R64
R65
R66
R67
R68
R69
R70
R71
R72
R73
R74
R75
R76
R77
R78
R79
R80
R81
R82
R83
R84
RK3051
RK3051
RK3026
RK3050
RK3062
RK3035
RK3066
RK3050
RK3046
RK3062
RK3063
RK3036
RK3038
RK3050
RK3047
RK3050
RK3030
RK3030
RK3049
RK3066
RK3038
RK3026
RK3074
RK3074
RK3074
RK3074
RK3030
RK3074
RK3064
RK3058
RK3050
RK3058
NC
RK3050
RK3058
RK3054
RK3076
RK3076
RK3058
RK3058
RK3042
RK3058
RK3036
RK3050
RK3058
RK3054
RK3050
RK3054
RK3022
RK3062
RK3042
RK3046
RK3050
RK3036
MCR03EZHJ123
MCR03EZHJ123
MCR03EZHJ101
MCR03EZHJ103
MCR03EZHJ104
MCR03EZHJ561
MCR03EZHJ224
MCR03EZHJ103
MCR03EZHJ472
MCR03EZHJ104
MCR03EZHJ124
MCR03EZHJ681
MCR03EZHJ102
MCR03EZHJ103
MCR03EZHJ562
MCR03EZHJ103
MCR03EZHJ221
MCR03EZHJ221
MCR03EZHJ822
MCR03EZHJ224
MCR03EZHJ102
MCR03EZHJ101
MCR03EZHJ105
MCR03EZHJ105
MCR03EZHJ105
MCR03EZHJ105
MCR03EZHJ221
MCR03EZHJ105
MCR03EZHJ154
MCR03EZHJ473
MCR03EZHJ103
MCR03EZHJ473
MCR03EZHJ103
MCR03EZHJ473
MCR03EZHJ223
MCR03EZHJ155
MCR03EZHJ155
MCR03EZHJ473
MCR03EZHJ473
MCR03EZHJ222
MCR03EZHJ473
MCR03EZHJ681
MCR03EZHJ103
MCR03EZHJ473
MCR03EZHJ223
MCR03EZHJ103
MCR03EZHJ223
MCR03EZHJ470
MCR03EZHJ104
MCR03EZHJ222
MCR03EZHJ472
MCR03EZHJ103
MCR03EZHJ681
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
R85
R86
R87
R88
R89
R90
R91
R92
R93
R94
R95
R96
R97
R98
R99
R100
R101
R102
R103
R104
R105
R106
R107
R108
R109
R110
R111
R112
R113
R114
R115
R116
R117
R118
R119
R120
R121
R122
R123
R124
R125
R126
R127
R128
R129
R130
R131
R132
R133
R134
R135
R136
R137
R138
RK3050
RK3038
RK3050
NC
RK3001
RK3032
RK3062
RK3058
RK3050
RK3050
RK3036
RK3032
RK3058
RK3044
RK3050
NC
RK3036
RK3062
RK3050
RK3050
RK3041
RK3052
RK3048
RK3052
RK3050
RK3050
RK3066
RK3054
RK3050
RK3038
RK3062
RK3066
RK3074
RK3014
RK3051
RK3042
NC
RK3032
RK3062
RK3070
RK1018
RK3058
RK3062
RK3062
RK3055
RK3062
RK3050
RK3046
RK3046
RK3046
RK3046
RK3074
RK3050
RK3022
MCR03EZHJ103
MCR03EZHJ102
MCR03EZHJ103
MCR03EZHJ000
MCR03EZHJ331
MCR03EZHJ104
MCR03EZHJ473
MCR03EZHJ103
MCR03EZHJ103
MCR03EZHJ681
MCR03EZHJ331
MCR03EZHJ473
MCR03EZHJ332
MCR03EZHJ103
MCR03EZHJ681
MCR03EZHJ104
MCR03EZHJ103
MCR03EZHJ103
MCR03EZHJ182
MCR03EZHJ153
MCR03EZHJ682
MCR03EZHJ153
MCR03EZHJ103
MCR03EZHJ103
MCR03EZHJ224
MCR03EZHJ223
MCR03EZHJ103
MCR03EZHJ102
MCR03EZHJ104
MCR03EZHJ224
MCR03EZHJ105
MCR03EZHJ100
MCR03EZHJ123
MCR03EZHJ222
MCR03EZHJ331
MCR03EZHJ104
MCR03EZHJ474
ERJ8GEYJ101V
MCR03EZHJ473
MCR03EZHJ104
MCR03EZHJ104
MCR03EZHJ273
MCR03EZHJ104
MCR03EZHJ103
MCR03EZHJ472
MCR03EZHJ472
MCR03EZHJ472
MCR03EZHJ472
MCR03EZHJ105
MCR03EZHJ103
MCR03EZHJ470
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
R139
R140
R141
R142
R143
R144
R145
R146
R147
R148
R149
R150
R151
R152
R153
R154
R155
R156
R157
R158
R159
R160
R161
R162
R163
R164
R165
R166
R167
R168
R169
R170
R171
R172
R173
R174
R175
R176
R177
R178
R179
R180
R181
R182
R183
R184
R185
R186
R187
R188
R189
R190
R191
R192
RK3057
RK3058
RK3054
RK3042
RK3058
RK3061
RK3050
RK3058
RK3045
RK3063
RK3040
RK3038
RK3038
RK3062
RK3065
RK3061
RK3057
RK3049
RK3059
RK3063
RK3052
RK3068
RK3045
RK3062
RK3048
RK3038
RK3050
RK3074
RK3038
RK3046
RK3066
RK3069
RK3072
RK3050
RK3050
RK3050
RK3038
RK3060
RK3067
RK3050
RK3060
RK3055
RK3062
RK3050
RK3051
RK3063
RK3048
RK3038
RK3046
RK3038
RK3046
RK3050
RK3050
RK3066
MCR03EZHJ393
MCR03EZHJ473
MCR03EZHJ223
MCR03EZHJ222
MCR03EZHJ473
MCR03EZHJ823
MCR03EZHJ103
MCR03EZHJ473
MCR03EZHJ392
MCR03EZHJ124
MCR03EZHJ152
MCR03EZHJ102
MCR03EZHJ102
MCR03EZHJ104
MCR03EZHJ184
MCR03EZHJ823
MCR03EZHJ393
MCR03EZHJ822
MCR03EZHJ563
MCR03EZHJ124
MCR03EZHJ153
MCR03EZHJ334
MCR03EZHJ392
MCR03EZHJ104
MCR03EZHJ682
MCR03EZHJ102
MCR03EZHJ103
MCR03EZHJ105
MCR03EZHJ102
MCR03EZHJ472
MCR03EZHJ224
MCR03EZHJ394
MCR03EZHJ684
MCR03EZHJ103
MCR03EZHJ103
MCR03EZHJ103
MCR03EZHJ102
MCR03EZHJ683
MCR03EZHJ274
MCR03EZHJ103
MCR03EZHJ683
MCR03EZHJ273
MCR03EZHJ104
MCR03EZHJ103
MCR03EZHJ123
MCR03EZHJ124
MCR03EZHJ682
MCR03EZHJ102
MCR03EZHJ472
MCR03EZHJ102
MCR03EZHJ472
MCR03EZHJ103
MCR03EZHJ103
MCR03EZHJ224
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
Electrical Parts
R193
R194
R195
R196
R197
R198
R199
R200
R201
R202
R203
R204
R205
R206
R207
R208
R209
R210
R211
R212
R213
R214
R215
R216
R217
R218
R219
R220
R221
R222
R223
R224
R225
R226
R227
R228
R229
R230
R231
R232
R233
SW17
SW18
TC1
VR1
VR2
VR3
W1
W2
W3
X1
X2
X3
XF1
RK3066
RK3074
NC
RK3062
RK3062
RK3001
RK3066
RK3066
RK3074
RK3062
RK3062
RK3062
RK3066
RK3074
RK3074
RK3058
RK3065
NC
NC
NC
NC
RK3046
NC
RK3062
RK3043
RK0107
RK3058
RK3066
RK3030
RK3030
NC
RK3062
NC
RK3001
RK3042
RK3001
NC
NC
RK3001
RK3050
RK3042
UU0030
UU0030
CT0046
RH0142
RH0146
RH0140
MACL07AA
MACL07AA
MACLH2GG
XQ0096
XQ0058A
XQ0131
XF0055
MCR03EZHJ224
MCR03EZHJ105
MCR03EZHJ104
MCR03EZHJ104
MCR03EZHJ000
MCR03EZHJ224
MCR03EZHJ224
MCR03EZHJ105
MCR03EZHJ104
MCR03EZHJ104
MCR03EZHJ104
MCR03EZHJ224
MCR03EZHJ105
MCR03EZHJ105
MCR03EZHJ473
MCR03EZHJ184
MCR03EZHJ472
MCR03EZHJ104
MCR03EZHJ272
ERJ6GEY0R00V
MCR03EZHJ473
MCR03EZHJ224
MCR03EZHJ221
MCR03EZHJ221
MCR03EZHJ104
MCR03EZHJ000
MCR03EZHJ222
MCR03EZHJ000
MCR03EZHJ000
MCR03EZHJ103
MCR03EZHJ222
EVQPJ005Q
EVQPJ005Q
TC03C100A-TP02
MVR22HXBRN103
MVR22HXBRN473
MVR22HXBRN472
#30A02-070-02
#30A02-070-02
#30AH1-025-H1
12.8MHZ 5PPM UM5
UM-5 30.395MHZ
CSA310 3.686400MHZ
UM-5-3P 30.85MHz
Electrical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Mechanical Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
Packing Parts
RE1
UP0404A
UR0019
AF0012
AF0020Z
AF0029
AK0001Z
AN0012
AN0025
DG0035
DP0146
ES0024
FF0029
FG0274
FG0286
FG0289
FG0290
FG0291
FG0304
FG0324
FM0176
FM0177
FM0178
FM0179
FM0187
KZ0098
NK0068
RD0108
SS0092A
ST0063
TL0022
TS0142
TS0148
TW0020
TZ0049
UE0441
YX0024
BB0009Y
DS0446
EA0079
EBP50N
EDC17
EDC93
HH0061
HK0550
HM0211
HU0150
HU0174
PH0013
PK0093
PR0433
PR0447
PR0452
PS0358C
DJ496 INTEGRATED
RH70N00E20 (RY-6320)
0PH M2+4 FE/ZN3
1P 2X3 NIC
XQN2+C9FN
BT 3P 2X4 NIC
RND N7X0.75 BR/B.ZN
RND N3/8-32BR/N
LCD LIGHT
LCD PANEL DJ296
36-8BB-21
CLOTH 4.0X22
DC CAP
KL6766-JACK CAPDJ195
TERMINAL RUBBER 195
KL6767-PTT DJ195
LCD RUBBER CONNECT.
KL3735-3 16KEY DJ196
LCD CUSHION DJ496
PLUS TERMINAL DJ195
RADIATIVE PLATE 195
PIN DJ195
Antenna Earth DJ195
REAR PANEL DJ196
Front Case DJ195
DIAL KNOB DJ195
J1/6Z
CHASSIS DJ196
LCD HOLDER DJ195
REFLECTIVE SHEET 195
VCO Case XH655
VCO Shield DJP85
W.PROOF A XH720
SILICON DUMPER
ANT. CONNECT
LCD TAPE DJ195
Strap
Spec. sheet
Antenna
Ni-MH Battery Pack
Belt Clip
Wall Charger 120V
Air cap
Package
Carton
Inner C
Inner 10
Warranty
Schematic Diagram
A lavel
FCC warning lavel
FCC home use lavel
Instruction Manual
de-emphasis circuit (R106, R107, C127 and C128) and amplified by the AF amplifier (Q27).
The signal is then input to pin 2 of the electronic volume (IC6) for volume adjustment, and output
from pin 1. The adjusted signal is sent to the audio power amplifier (IC5) through pin 2 to drive
the speaker.
2) Transmitter System
1. Modulator Circuit
The audio signal is converted to an electric signal in either the internal or external microphone, and
input to the microphone amplifier (IC8). IC8 consists of two operational amplifiers; one amplifier
(pins 5, 6 and 7) is composed of pre-emphasis and IDC circuits and the other (pins 1, 2, and 3)
is composed of a splatter filter. The maximum frequency deviation is obtained by VR1 and input
to the cathode of the varicap (D3) of the VCO, to change the electric capacity in the oscillation
circuit. This produces the frequency modulation.
2. Power Amplifier Circuit
The transmitted signal is oscillated by the VCO, amplified by the pre-drive IC (IC1) and drive
amplifier (Q4), and input to the final amplifier (Q2). The signal is then amplified by the final
amplifier (Q2) and led to the antenna switch (D2 and D5) and low-pass filter (L2, L3, L5, C2,
C9, C10, C11, C24, and C189), where unwanted high harmonic waves are reduced as needed,
and the resulting signal is supplied to the antenna.
3. APC Circuit
Part of the transmission power from the low-pass filter is detected by D7, converted to DC, and
then amplified by a differential amplifier. The output voltage controls the bias voltage from the
source of Q2 and Q4 to maintain the transmission power constant.
3) PLL Synthesizer Circuit
1. PLL
The dividing ratio is obtained by sending data from the CPU (IC9) to pin 2 and sending clock
pulses to pin 3 of the PLL IC (IC2). The oscillated signal from the VCO is amplified by the buffer
(Q5 and Q37) and input to pin 6 of IC2. Each programmable divider in IC2 divides the
frequency of the input signal by N according to the frequency data, to generate a comparison
frequency of 5 or 6.25 kHz.
2. Reference Frequency Circuit
The reference frequency appropriate for the channel steps is obtained by dividing the 12.8 MHz
reference oscillation (X1) by 2048 or 2560, according to the data from the CPU (IC9). When
the resulting frequency is 5 kHz, channel steps of 5, 10, 15, 20, 25, 30 and 50 kHz are used.
When it is 6.25 kHz, the 12.5 kHz channel step is used.
3. Phase Comparator Circuit
The PLL (IC1) uses the reference frequency, 5 or 6.25kHz. The phase comparator in the IC2
compares the phase of the frequency from the VCO with that of the comparison frequency, 5 or
6.25kHz, which is obtained by the internal divider in IC2.
4. PLL Loop Filter Circuit
If a phase difference is found in the phase comparison between the reference frequency and VCO
output frequency, the charge pump output (pin 8) of IC1 generates a pulse signal, which is
converted to DC voltage by the PLL loop filter (C69, C70, C80, C88, R44 and R48) and input
to the varicap (D3) of the VCO unit for oscillation frequency control.
5. VCO Circuit A Colpitts oscillation circuit driven by Q3 directly oscillates the desired frequency.
The frequency control voltage determined in the CPU (IC9) and
PLL circuit is input to the varicaps (D3). This change the oscillation frequency, which is amplified
by the VCO buffer (Q5) and output from the VCO unit.
4) CPU and Peripheral Circuits
1. LCD Display Circuit
The CPU turns ON the LCD via segment and common terminals with 1/4 the duty and 1/4 the
bias, at the frame frequency is 112.5Hz.
2. Display Lamp and Key Lamp Circuit
When the LAMP key is pressed, “H” is output form pin 42 of the CPU (IC9) to the bases of
Q19, Q24 and Q25. Q19, Q24 and Q25 then turn ON and the LED’s (D17, D18, D20, D21,
D22 and D23) light.
3. Reset and Backup
When the power form the DC jack or external battery increases from Circuits 0 V to 2.5 or more,
“H” level reset signal is output form the reset IC (IC11) to pin 33 of the CPU (IC9), causing the
CPU to reset. The reset signal, however, waits at 100, and does not enter the CPU until the CPU
clock (X3) has stabilized.
4. S (Signal) Meter Circuit
The DC potential of pin 8 of IC5 is input to pin 1 of the CPU (IC9), converted from an analog to
a digital signal, and displayed as the S-meter signal on the LCD.
5. DTMF Encoder
The CPU (IC9) is equipped with an internal DTMF encoder. The DTMF signal is output from
pin 10, through R179 and R180 (for level adjustment), and then through the microphone amplifier
(IC8), and is sent to the varicap of the VCO for modulation. At the same time, the monitoring
tone passes through the AF circuit and is output form the speaker.
6. CTCSS Encoder
The CPU (IC9) is equipped with an internal tone encoder. The tone signal (67.0 to 250.3 Hz) is
output form pin 9 of the CPU to the varicap D4 of the VCO for modulation.
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