Kenwood TK-480 - Manual (Page 34)

33
TK-480/481
ADJUSTMENT
Repair Jig (Chassis)
Use jig (part No. : W05-0825-00) for repairing the TK-480/
481.
The jig facilitates the voltage check and protects the
module when the voltage on the flow side of the TX-RX unit
is checked during repairs.
How to Remove the Flat Cable
1. Gently draw out both sides of the connector lever uni-
formly in the direction of the arrow with tweezers.
(CN300, CN301)
2. Gently prise up the connector lever in the direction of the
arrow with a fine regular screwdriver or tweezers.
(CN1, CN3, CN304)
Tweezers
Lever
Flat cable
Power
module
Jig
TX-RX unit
Battery terminal (+)
Flat cable
Lever
Regular screwdriver
• Panel tuning
• PC tuning
Connect the wires to the PCB in the connector case of
interface cable.
For output the wires out of the connector case, need to
process the connector case.
11: GREEN (5M)
TUBE
SCREW
8: YELLOW (PF SW)
2: RED (RX AF OUTPUT)
3: BLACK (RX AF OUTPUT)
10: BROWN (GND)
6: BROWN (MIC GND)
5: WHITE (MIC INPUT)
7: BLUE (PTT SW) GND → ON
PCB layout
Shield
AF voltmeter
Audio generator
100 µ 10 V
100 µ 10 V
10 µ 10 V
+
+
+
16 Ω
RED (2)
BLK (3)
+
+
100 µ 10V
100 µ 10V
16 Ω
WHT
(5)
BRN (6)
BLU (7)
BRN (10)
PTT SW To Radio
AF Voltmeter
Audio generator
+
10 µ 10V
Connector case
KPG-36
Remove the
screw