HT-X9000F/XF9000
33
3. The sound is not outputted
Entering the “BUILT-IN DEMO”
(touch the [ ] button for 3
seconds), and then the “BUILT-IN
DEMO” sound is outputted.
(Touch the [ ] button again to
release the “BUILT-IN DEMO”)
The sound is not outputted.
No
Yes
Check the signal path for being inputted to
the IC101 on the MAIN board, and then
replace the complete MAIN board.
(IC101 on the MAIN board and digital
power amplifier (IC6006) on the SK1 AMP
board is OK)
Yes
The voltage of the following is 28.5 V.
SK1 AMP board: IC6006 pin 29 to 31,
36 to 38 (PVDD)
Yes
No
The PWM signal is inputted INPUT
_A (pin 5), INPUT_B (pin 6), INPUT
_C (pin 14) and INPUT_D (pin 15)
lines of IC6006 on the SK1 AMP
board.
Check the area surrounding IC6007
on the SK1 AMP board.
If IC6007 is abnormality, replace the
IC6007 on the SK1 AMP board.
If IC6007 is normal and area
surrounding IC6007 is abnormal,
replace the SK1 AMP board.
Check the fuses (F6001, F6002) on the
SK1 AMP board and if it damaged, replace
the fuses (F6001, F6002) on the SK1 AMP
board.
No
Yes
Check the OUT_A (pin 39, 40), OUT_B
(pin 35), OUT_C (pin 32) and OUT_D
(pin 27, 28) lines of IC6006 on the SK1
AMP board do not short-circuits or opens.
If there is no abnormality, replace the
IC6006 on the SK1 AMP board.
4. Power is not turned on
Power is not turned on.
The voltage of the following is
28.5 V.
POWER board: CN902 pin 1, 6, 7, 8
The voltage of the following is 4 V.
MAIN board: CL401
Yes
POWER board is damaged.
Replace the POWER borad.
Yes
Yes
The voltage of the following is 3.3 V.
MAIN board: CL402
Yes
Fuse (F901) on the POWER board
conduct the electricity.
No
No
No
The voltage of the following is 5.5 V.
SK1 AMP board: CN6001 pin 3, 4
The voltage of the following is
12.5 V.
SK1 AMP board: CN6001 pin 6
The voltage of the following is 3.3 V.
SK1 AMP board: IC6001 pin 3
Yes
Yes
No
Replace the MAIN board.
No
Replace the fuse (F901) on the POWER
board.
No
Replace the MAIN board.
Check the area surrounding IC401 on the
MAIN board.
If there is abnormality, replace the MAIN
board.
Check the area surrounding IC402 on the
MAIN board.
If there is abnormality, replace the MAIN
board.
Check the area surrounding IC6001 on the
SK1 AMP board.
If there is abnormality, replace the SK1
AMP board.
Yes
Summary of Contents for HT-X9000F
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