FR-155
30
ADJUSTMENT OF CLOCK FREQUENCY
1. Remove the top cover.
2. Connect the frequency counter to the terminal
P702
on the CD & microprocessor PC board (NADG-6939)
3. While hold down
CD STOP
key, press
STANDBY/ON
key to set the test mode.
(All segments on FL tube light on and scroll the character for FL tube test.)
4. Adjust the trimmer capacitor
C711
so that the reading of frequency counter becomes 5000000 10 Hz.
front side
CD & microprocessor PC board
NADG-6933
Right side view
4,999,990~5,000,010 Hz
CAL.
GND
Frequency counter
Trimmer capacitor
C711
Test point
P702
