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HT-GT1
1. When sound is not outputted
Sound is not outputted
Sound is not output from all
functions.
Yes
The voltage of the following
pin is 36 V.
MAIN board: CN4001
Between the pin 1 (V1) and
pin 4 (V1_GND).
Yes
The voltage of the following
pin is "H".
MAIN board: IC002
pin 2 (RESET)
Yes
Replace the IC002 on the
MAIN board.
2. When liquid crystal display is not displayed
Liquid crystal display is
not displayed
Display does not change when
you press the [DISPLAY] button
on the remote commander.
Yes
The liquid crystal display is
displayed, when pull out the
speaker cable (CN2001 (for
SP1) and TB003 (for SS-GT1)
on the MAIN board), and then
turn the AC power on/off again.
Yes
Replace check the wire
and speaker.
28
SECTION 5
TROUBLESHOOTING
No
Fuse (F100) on the SMPS
board conduct the electricity.
Yes
Replace the Q101 and Q103
on the SMPS board.
No
Check and repair the IC002
on the MAIN board and the
surrounding circuit.
DC detection of IC002 is working.
No
Check the short-circuit (the power
source or the earth fault) of the
audio output line of the IC002.
Replace the IC002 if there is
no problem.
No
Replace the fuse (F100) on the
SMPS board.
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