46
TK-980/981
ADJUSTMENT
Adjustment Location
■
Switch
MODULAR
MIC JACK
MONITOR
SCAN
POWER
BUSY/
TX LED
VOLUME
UP
VOLUME
DOWN
SYSTEM
UP
SYSTEM
DOWN
SUB
DISPLAY
MONITOR
PRIORITY
SERVICE
AUXILIAY
HANDSET
SCAN
PROGRAMMABLE
FUNCTION KEYS
ALPHANUMERIC
DISPLAY
■
Adjustment Point
■
Note
• Flash memory
The firmware program (User mode, Test mode, Tuning
mode, etc.) and the data programmed by the FPU (KPG-49D)
for the flash memory, is stored in memory. When parts are
changed, program the data again.
• EEPROM
The tuning data (Deviation, Squelch, etc.) for the
EEPROM, is stored in memory. When parts are changed,
readjust the transceiver.
Measurement
Test-
equipment
Unit
Terminal
Adjustment
Unit
Parts
Method
Specifications/Remarks
Condition
Item
1. PLL lock
1) Set test mode
DVM
TX-RX
TP1
PLL
TC100 1.5V
±
0.1V
voltage
CH : (TA) CH7 - Sig1
Power meter (A/2)
PTT : ON (Transmit)
F. conter
2) CH : CH1 - Sig1
Check
6.6V or less
PTT : ON (Transmit)
Common Section
TX-RX UNIT (A/2)
PLL/VCO
TP1
TC100
L6
■
Repair Jig (Chassis)
Use jig (Part No. : A10-4010-02) for repairing the
TK-980/981. The jig facilitates the voltage check
when the voltage on the component side TX-RX unit
(A/2) is checked during repairs.