Kenwood TK-3140 Service Manual page 16

TK-3140
Common Section
Item Condition
1. Setting 1) BATT terminal voltage:7.5V
2) SSG Standard modulation
[Wide] MOD:1kHz, DEV:3kHz
[Narrow] MOD:1kHz, DEV:1.5kHz
2. VCO lock [Panel Test Mode]
voltage 1) CH-Sig:2-1
RX 2) CH-Sig:3-1
TX 3) CH-Sig:2-1
PTT:ON
4) CH-Sig:3-1
PTT:ON
Transmitter Section
Item Condition
1. Frequency 1) Adj item [FREQ]
Adjust Adjust [
PTT:ON
2. Hight Power 1) Adj item [HPOW]
Adjust Adjust [
2) Adj item
[L HPOW]
Adjust [
PTT:ON
3. Hight Power [Panel Test Mode]
Check 1) CH-Sig:1-1
PTT:ON
2) CH-Sig:2-1
PTT:ON
3) CH-Sig:3-1
PTT:ON
4. Low Power 1) Adj item [LPOW]
Adjust Adjust [
2) Adj item
[L LPOW]
Adjust [
PTT:ON
5. Low Power [Panel Test Mode]
Check 1) CH-Sig:1-1
Set low power (Push [B])
PTT:ON
2) CH-Sig:2-1
PTT:ON
3) CH-Sig:3-1
PTT:ON
16
ADJUSTMENT
Measurement
Test equipment
Power meter
DVM
Measurement
Test equipment
Power meter
] Am meter
]
[L2 HPOW] [C HPOW] [H2 HPOW]
] Note: For K2 and K3 type; The output power 4.0W ±0.1W cannot be obtained by adjusting [H HPOW]
]
[L2 LPOW] [C LPOW] [H2 LPOW]
]
Unit Terminal Unit
Panel ANT TX-RX
TX-RX CV
Unit Terminal Unit
Panel ANT Panel
[H HPOW]
value, set the same value as [H2 HPOW].
Panel
[H LPOW]
Adjustment
Specifications/
Remark
Parts Method
4.1V:K
TC2 4.2V:K2,K3 ±0.1V
Check 0.6V or more
TC1 4.1V:K ±0.1V
4.2V:K2,K3
Check 0.6V or more
Adjustment
Specifications/
Remark
Parts Method
Encoder Center frequency ± 100Hz
knob
Encoder 4.0W ±0.1W
knob 1.9A or less
Check 3.7~4.3W
1.9A or less
Encoder 1.0W ±0.05W
knob 1.0A or less
Check 0.5~1.5W
1.2A or less