akira 14KLS4/CE, Service Manual

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Model No.: 14KLS4CE
Version: 1.0
SERVICE FLOW CHART
Power supply
Check input voltage
― →
check voltage of C910 anode
―→
check Pin 3 of N901
―→
check
V901
―→
check output voltage of T901 secondary coil
―→
check voltage of N904, N905 Pin 3
(5.0v) and N903 Pin3 (9.0V)
―→
check voltage of N103 Pin 8, 31, 32, 35, 36, 43, 55 (5v) and Pin 11,
19 (8v)
―→
check voltage of N602 Pin 8 (+5V).
Audio circuit
Check power supply of audio power amplify circuit
―→
check input audio signal of audio power
amplify circuit
―→
check waveform of N103 Pin 5
―→
check waveform of xs808 Pin 16, 17
―→
check waveform of N201 Pin 8, 10.
Horizontal circuit
Check voltage of T402 Pin 3 (110V)
―→
check voltage of N103 Pin 19 (+9.0V)
―→
check
waveform of V401 Base
―→
check waveform of V402 Collector
―→
check output voltage of
T402 coil
―→
check waveform of T402 Pin 8.
Vertical circuit:
Check voltage of N440 Pin 2 (+25V) and Pin7 (+9V)
―→
check voltage of N103 pin 19 (+9V)
―→
check waveform of N103 Pin 17
―→
check waveform of N440 Pin 1
―→
check waveform of
N440 Pin 5
MCU circuit:
Check voltage of N103 Pin 31, 32 (5v)
―→
check waveform of N103 Pin 33.