Alignment Instructions Spear; Alignment For Clock Time Accuracy - Sangean ATS-818 Service Manual

ALIGNMENT INSTRUCTIONS
Note: (1) All test points are shown on schematic diagram,
(2) Load in fresh batteries before any alignment procedures.
(1) ALIGNMENT FOR CLOCK TIME ACCURACY
a. Required Instrument
Frequency Counter
b. Alignment Procedure
[ Adjustment | Procedure
(1) Turn the radio to SLEEP ON mode.
(2) Set the SAFETY switch upward to electrically lock all push buttons.
(3) Remove the batteries from the RADIO BATTERY compartment. The monitor TIME
BASE signal starts functioning.
(4) Connect a frequency counter to TP 15.
(5) Adjust TC401 to reach a reading 524288 + 4Hz ( = 7.6PPM or + 20sec/month) on
counter,
c. Instrument Connection
TC401
Freq. Counter
Test Point