Specifications

Page 13
Copyright 2006 Robert A. Larson, KC9ICH
CHART III
Timing System Inoperative
BAD
Check for 2.048 MHz oscillator output at
A1-D-8.
Troubleshoot and repair oscillator.
OK
Check for 128 KHz output at A14-11.
Check for 8 KHz output at A13-11.
OK
OK
OK
BAD Replace A14.
BAD Replace A13.
BAD Replace A12.
OK
BAD Replace A11.
Check for 500 Hz output at A12-11.
Check for 50 Hz waveform C at A11-12.
Check for proper waveform C at A6-A-3.
Inverse of A1-A-2, Figure 4-2.
BAD Replace A6.
OK
Check for proper waveform at A1-A-2. BAD Replace A1.
OK
Continued