Kenwood TK-860HG Service Manual page 26

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/501µV
SSG MOD : 3kHz
AF : 1.4V/4Ω
2. Sensitivity 1) Set test mode
• Wide Select "SENS" in tuning mode.
"S.E.N.S._."
Adjust [250]
SSG freq' : 489.950MHz K,M meter
: 511.950MHz K2
: 429.950MHz K3,M3
SSG output : –116dBm/0.35µV AG
SSG MOD : 3kHz
AF output : 1V/4Ω
2) "S.ENS"
Adjust [ *** ]
SSG freq' : 450.050MHz K,M
: 485.050MHz K2
: 400.050MHz K3,M3
3) "S.E.N.S"
Adjust [ *** ]
SSG freq' : 470.050MHz K,M
: 498.550MHz K2
: 415.050MHz K3,M3
3. Squelch 3 1) Set test mode
• Wide Select "SQL3" in tuning mode.
"S.QL3"
Adjust [ *** ]
SSG freq' : 450.050MHz K,M
: 485.050MHz K2
: 400.050MHz K3,M3
SSG output : –125dBm/0.12µV
SSG MOD : 3kHz (Wide)
ADJUSTMENT
Since the TK-862HG cannot be tuned from the panel, the FPU (KPG-56D) should be used for adjustment.
Measurement
Test-
equipment
DVM TX-RX CV
Power meter (A/2)
F. conter
Measurement
Test-
equipment
SSG Rear
panel
AF VTVM
Oscilloscope
SSG Rear
panel
AF VTVM
Distortion
Oscilloscope
DVM TX-RX RSSI
(A/2)
1.5kHz (Narrow)
TK-860HG/862HG
Adjustment
Unit Terminal Unit Parts
PLL TC106 7.5V
TC109 7.5V
Adjustment
Unit Terminal Unit Parts
ANT TX-RX L5
(A/2)
ACC
(EXT.SP)
ANT TX-RX L13
(A/2) L22
ACC
(EXT.SP)
Front CH /
panel
Specifications/Remarks
Method
± 0.1V
Check 0.9V or more
0.9V or more
Specifications/Remarks
Method
AF output maximum.
RSSI voltage
maximum.
RSSI voltage
maximum.
Adjust to the
squelch threshold
point.
25