Common Section; Receiver Section - Kenwood 762G Service Manual

Common Section

Item Condition
1. PLL lock 1) Set test mode
voltage CH : CH3 - Sig1
RX
TX 2) PTT : ON (Transmit)
RX 3) CH : CH2 - Sig1
AUX : ON (talk-around mode)
TX 4) PTT : ON (Transmit)

Receiver Section

Item Condition
1. Discriminator 1) Set test mode
• Wide CH : CH1 - Sig1
SSG output : –53dBm/501 V
SSG MOD : 3kHz
AF : 1.4V/4
2) SSG MOD : OFF
2. Sensitivity 1) Set test mode
• Wide Select "SENS" in tuning mode.
"S.E.N.S"
Adjust [120] K,M
Adjust [110] K2
SSG freq'
: 161.050MHz K
: 149.050MHz K2
: 160.050MHz M
SSG output : –118dBm/0.28 V
SSG MOD : 3kHz
AF output : 1V/4
2) "S.ENS"
Adjust [ *** ]
SSG freq'
: 148.050MHz K
: 136.050MHz K2
: 146.050MHz M
3) "S.E.N.S._."
Adjust [ *** ]
SSG freq'
: 173.950MHz K,M
: 161.950MHz K2
ADJUSTMENT
Since the TK-762G cannot be tuned from the panel, the FPU (KPG-56D) should be used for adjustment.
Measurement
Test-
Unit
equipment
DVM TX-RX CV
Power meter (A/2)
F. conter
Measurement
Test-
Unit
equipment
SSG Rear
panel
AF VTVM
Oscilloscope
DVM TX-RX IC5 9pin
(A/2)
SSG Rear
panel
AF VTVM
Distortion
meter
Oscilloscope
AG
DVM TX-RX RSSI
(A/2)
TK-760G/762G
Adjustment
Terminal Unit Parts
PLL TC106 7.5V K,M
7.0V K2
TC109 7.5V
Check
Adjustment
Terminal Unit Parts
ANT TX-RX L5 AF output maximum.
(A/2)
ACC
(EXT.SP)
0.7V DC
ANT TX-RX L11 RSSI voltage
(A/2) L13 maximum.
ACC L15
(EXT.SP) L18
Front CH /
panel
.
Specifications/Remarks
Method
0.1V
1.0V or more K,M
0.9V or more K2
0.5V or more K,M
1.0V or more K2
Specifications/Remarks
Method
49