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X-HM81-K
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5. DIAGNOSIS
5.1 TROUBLESHOOTING
• No Power
• Detection DC from AMP circuit.
Check the IC608, IC612 and its peripheral circuits. (MAIN Assy)
• Detection overvoltage on +B line.
Check the D307 and its peripheral circuits. (POWER Assy)
Yes
• Detection abnormality of the AMP circuit.
Check the IC608, IC612 and its peripheral circuits. (MAIN Assy)
Yes
• Detection abnormal temperature of the AMP L ch circuit.
Check the IC608 and its peripheral circuits. (MAIN Assy)
Yes
• Detection short-circuit on power supply circuits.
D307: B+_27V, B-_27V
IC305, IC307: AMP_+5V, AMP_-5V
IC315: MICOM_3V9
IC301, IC303: A_+12V, A_-12V
IC313: CD_3.3V
Check each IC mentioned above and peripheral circuits.
• Check workings of primary relay (RLY301).
• Check whether secondary fuse (FU302 to 305) does not perform blowout.
(POWER Assy)
Yes
No
Protect (protection history)
Does DC protect work?
No
No
No
Does POWER protect
work?
Does AMP protect
work?
• Detection PWM abnormality output of the AMP circuit.
Check the IC608, IC612 and its peripheral circuits. (MAIN Assy)
Yes
Does PWM protect
work?
No
X-HM81, XC-HM81 only
No
• Detection an overcurrent of Bluetooth power
Check the IC600 and its peripheral circuits.
Check the short-circuit of BT_+5V power (BT Assy).
Yes
Yes
Does BT Protect
work?
No
• Detection an overcurrent of power of Front USB or iPod Dock.
Check the IC11 and IC14 and its peripheral circuits.
Check the short-circuit of 5V power of Front USB or iPod Dock
(BCO Assy/DOCKING Assy/F_USB Assy).
Be not the trouble that each Protect circuit works.
Does USB protect
work?
Does
OVERTEMP1 protect
work?
• Detection abnormal temperature of the AMP R ch circuit.
Check the IC612 and its peripheral circuits. (MAIN Assy)
Yes
No
Does
OVERTEMP2 protect
work?
Содержание X-HM71-K
Страница 9: ...9 X HM81 K 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 75: ...75 X HM81 K 5 6 7 8 5 6 7 8 A B C D E F F N CP312 ...
Страница 83: ...83 X HM81 K 5 6 7 8 5 6 7 8 A B C D E F BD1 0 BD102 BD121T PLATE E 2 2 CP1 Video Signal Route M ...
Страница 100: ...100 X HM81 K 1 2 3 4 A B C D E F 1 2 3 4 F H SIDE B CP19 F CNT1 ASSY H CNT3 ASSY CP710 CP30 CP31 CP607 ...
Страница 105: ...105 X HM81 K 5 6 7 8 5 6 7 8 A B C D E F J I K SIDE B J F_USB ASSY I F_AUX ASSY FPC515 5 CN510 CP500 CN502 Q18 Q508 ...