Table of Contents
Advertisement
Power LED Blinks 8 or 9 Times
Power LED Blinks 8 or 9 Times
On the A board, the MCU (IC1100) monitors the SOUND+17V line and the operation of the audio power
amplifier IC2301. If IC2301, or the 17V lines develops a short to ground, a high is provided to the MCU to trigger a SOS
condition. The power LED blinks 9 times.
Use a voltmeter to measure the SOUND+17V source. If it is present, replace the A board. If it is absent, use
an ohmmeter to determine if there is a short to ground. When a short is detected, disconnect the connector P7 or A3 to
narrow it to the A or P board. A eight-blinks shutdown is always caused by the A board.
86
Hide quick links:
Advertisement
Table of Contents
