8050D N/B Maintenance
8.10 Audio Failure(Audio Amplifier & Subwoofer)
There is trouble with the sound from speaker or completely no sound
15,17 |
|
|
21 | ROUT+ |
|
16 | ROUT- |
|
P21 |
|
|
4 | LOUT+ |
|
U524 | LOUT- |
|
9 |
| |
AUDIO AMP | C474 | + |
C474 |
100U
TPA0212_GND
+5V
R1158
10K
VDD3S
R906
0
P13 | R905 |
8.2K |
U715
ICH4_M
R445
P2
U16 80
WINBOND
KBC
From Previous Page U726 | R511 |
|
|
| 100 | R463 |
2464_VREF |
|
|
| |||
|
|
| ||||
|
|
|
|
|
| |
SUB_RIGHT | C482 |
|
|
| 0.15U | R479 |
|
|
| ||||
|
|
|
|
|
| |
|
|
|
|
|
| R510 |
|
|
|
|
|
| |
SUB_LEFT | C490 |
|
|
| 0.15U | R509 |
|
|
| ||||
|
|
|
|
|
| |
|
|
|
|
|
|
|
From Previous Page U726
SPDIFOUT
|
| DEVICE_DECT |
|
|
|
|
|
|
|
|
|
|
| VA |
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
| L52 | 600Z/100M |
|
|
|
|
|
|
|
| R322 |
|
| R1183 |
| J720 | P21 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
| L50 | 600Z/100M |
|
|
| J7 | Internal |
| 4.7K |
|
| 10K |
| HP/OPT |
| ||||
|
|
|
|
|
|
|
|
| L754 |
| 600Z/100M |
|
| |||||||
|
| L14 | 600Z/100M |
|
|
|
| Connector |
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
|
| Speaker |
|
|
|
| L755 |
| 600Z/100M |
|
|
| ||
|
|
|
|
|
|
|
|
| Document |
|
|
|
|
|
| |||||
|
|
|
|
|
|
| Secret | AGND |
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||
|
| L16 | 600Z/100M |
|
|
| J3 |
| DECT HP#OPT |
|
| L55 |
| L758 |
| CONNECTOR |
| |||
|
|
|
|
|
|
|
|
|
|
|
|
| 600Z/100M |
|
|
| ||||
+ C489 |
|
|
|
|
|
|
|
|
|
|
|
|
| L757 |
|
| LED |
|
| |
100U | R329 | 22 | L80 | 600Z/100M |
|
|
|
|
|
|
| 600Z/100M |
| Drive |
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||
|
| R528 | 22 | L78 | 600Z/100M |
|
|
|
|
|
|
|
|
|
|
| IC |
|
| |
|
|
| MiTac |
|
|
|
| +3V |
|
| 600Z/100M | GP1FD310TP |
| |||||||
|
|
|
|
|
|
|
|
|
| Q711 |
|
|
|
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| DTA144WK |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| DECT_HP#/ |
| |
| Confidential |
|
| R1185 |
|
| DEVICE_DECT# | OPT | REMARK | |||||||||||
|
|
|
|
| 0 |
| 0 | HP in | ||||||||||||
|
| D715 |
|
|
|
|
|
|
|
|
| 10K |
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
| BAW56 |
|
| OPTIN# |
|
|
|
|
|
|
|
|
|
| 0 |
| 1 | OPT in | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
| Q713 |
|
| VA |
| 1 |
| 0 | No this condition |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
| 1 | No device | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
| From Previous Page U726 |
| +3V |
| +5V |
|
|
|
|
|
|
| R367 |
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
| 10K |
|
|
|
|
| ||
|
|
| D22 |
|
|
|
|
|
|
|
|
|
|
|
| DEVICE_DECT |
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
| EAPD | BAT54C |
| Q38 |
|
| R477 |
|
|
|
|
|
|
|
|
| To U524 |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
| AMP_SHUTDOWN |
| DEVICE_DECT# |
|
| Q23 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| DTC144TKA |
|
|
| ||
0 |
| KBC MUTE | D27 |
|
|
|
|
|
|
|
| D19 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| RLS4148 |
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
| VA | RLS4148 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
| U19 |
|
|
|
|
|
|
|
| C471 |
| 1000P |
|
|
|
|
| |
|
|
| LMV822 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| R1122 | 2.1K |
|
|
|
|
| ||
22.1K | 3 |
|
|
|
|
|
|
|
| D17 | R1125 |
|
|
|
|
|
|
| Subwoofer | |
|
|
|
|
|
|
|
| RLS4148 | 0 |
|
|
| 5 | R26 | 0 | P21 | ||||
|
|
| 1 |
| C496 | 0.22U | R502 |
| 8.2K |
|
|
| ||||||||
|
|
|
|
|
| 1 |
|
|
|
|
|
| J705 | Speaker | ||||||
22.1K | 2 |
| SUB_OUTR |
|
|
|
|
|
|
|
|
| P21 | 8 | R27 | 0 | ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Connector | ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
| U725 |
|
|
| |||
22.1K | 5 |
|
| C483 | 0.22U | R496 |
| 8.2K |
| 4 |
|
|
|
|
| |||||
|
|
| 7 |
|
|
| LM4871 | 6 | L63 | 120Z/100M | +5V |
| ||||||||
22.1K | 6 |
| SUB_OUTL |
|
|
|
|
|
|
|
|
|
|
| ||||||
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||
126