Common Section - Kenwood TK-380 Service Manual

Common Section

Item Condition
1. Setting 1) BATT terminal voltage:7.5V
2) SSG Standard modulation
[Wide] MOD:1kHz, DEV:3kHz
[Semi wide] MOD:1kHz, DEV:2.4kHz
[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 [Panel Tuning Mode except when Panel TEST Mode is specified.]
Item Condition
1. Frequency 1) Adj item [FREQ]
Adjust Adjust [∗∗∗]
PTT:ON
2. Max Power 1) Adj item [HPOW]
Check Adjust [256]
2) Adj item
[L HPOW]
Adjust [256]
PTT:ON
3. Hight Power 1) Adj item [HPOW]
Adjust Adjust [∗∗∗]
2) Adj item
[L HPOW]
Adjust [∗∗∗]
PTT:ON
4. 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
5. Low Power 1) Adj item [LPOW]
Adjust Adjust [∗∗∗]
2) Adj item
[L LPOW]
Adjust [∗∗∗]
PTT:ON
6. Low Power [Panel Test Mode]
Check 1) CH-Sig:1-1
Set low power (Push [C])
PTT:ON
2) CH-Sig:2-1
PTT:ON
3) CH-Sig:3-1
PTT:ON
ADJUSTMENT
Measurement
Test equipment
Power meter Panel
DVM TX-RX
Measurement
Test equipment
Power meter Panel
Am meter
[L2 HPOW] [C HPOW] [H2 HPOW]
[L2 HPOW] [C HPOW] [H2 HPOW]
[L2 LPOW] [C LPOW] [H2 LPOW]
Unit Terminal Unit
ANT
CV (CN14)
Unit Terminal Unit
ANT Panel
[H HPOW]
[H HPOW]
Panel
[H LPOW]
TK-380
Adjustment
Specifications/
Remark
Parts Method
Check 0.8V or more
4.4V or less
0.8V or more
4.4V or less
Adjustment
Specifications/
Remark
Parts Method
Center frequency ± 100Hz
Encoder
knob (Note:)After replacing the TCXO
(X1), align using KPG-60D.
Check 4.3W or more
±0.1W
Encoder 4.0W
knob 2.2A or less
Check 3.8~4.2W
2.3A or less
±0.1W
Encoder 0.8W
knob 1.0A or less
Check 0.5~1.5W
1.2A or less
49