ViewSonic VS12335-1M, Руководство по обслуживанию

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8 . 12 . Audio Amp. Interface
Audio Pre-Amplifier
HIGH-->STAND BY ENABLE
LOW-->STAND BY
DISABLE
AC ON/OFF Mute
SD LOW==>> SHUT DOWN
SD HI ==>> AMP WORKS
Seaker
6W/8ohm
Close to MST. IC
pull high res(R606) from 5K1 modify to 2K 080901
I602 foodprint from "SPDSO08" modify to "SO08" ; C642 cap value from 470n modify to 1uF 080901
link PROTN and SLEEPN,move R628 and modify R627 from 10K to 47K, R663 from NC to 10K,add Q607 MMT3904 080901
pull high res(R632) from 0R modify to 18K 080901
add C660.C661.C662(1uF).R737(22K),R641 modify value from 10K to 47K 080910
del R646.R647.Q605. 080910
add C663.C664 080910
Close to MST. IC
C621.C628 from 15nF modify to 33nF 080910
add AU_DACO_1L.R circuit 080910
C629,C635,C614,C609 modify package from C0805 to C0603 080910
modify earphone balance issue 081014
PHONE_L
RA
LB
LA
PHONE_R
MUTE_N
RB
MUTE_N
POWER-ON/OFF-GPIO44
SHUT_DOWN_AU
MUTE_S/GPIO124
AVDD_3.3
PH_DET
PHONE_DET
AU_DACO_1R
AU_DACO_1L
AUOUTL1A
AUOUTR1A
AUOUTL0A
AUOUTR0A
AU_DACO_0L
AU_DACO_0R
POWER-SAVING-GPIO98
12V
AVDD
PVDD
PVDD
PVDD
PVDD
PVDD
AVDD_3.3
AVDD
PVDD
AVDD_3.3
5VAMP
12V
5VAMP
AVDD_3.3
PVDD
VAF AVREF
5VAMP
AVREF
VAF
AVREF
VAF
VCC3.3V-ST
VCC3.3V-ST
C640
330pF
C667
NC/33nF
C607
10uF/0805
R635 NC/4.7K
R619
10K
D603
Zener/3.3V
1
2
R742
0R
C669 NC/100P
C638
1uF/0603
+
C602
1000u/16V LSER
C608
1uF/0603
R602 NC/1K
I602 TPA6113A2
3
4
5
6
7
8
1
2
BYPASS
GND
SHUTDOWN
IN2
VO2
VDD
VO1
IN1
R634 100R
E
B
C
SOT
23
Q602
NC/MMBT3906
1
3
2
R738 NC/100R
R696
0R
L603 NC/22uH/2.9A
R637
0R
C621
33nF
+
-
I603A
NC/LM358/SO8
3
2
1
8
4
C623 100nF/0603
C634
NC/
1uF/
0805
(Product ver)
I601
D-5 QFN32
1
2
3
4
5
6
7
8
9
10 12 13 14 15 16
17
18
20
19
21
22
23
24
25
26 27 28 29 30 31 32
11
PVDDREG
AVDD
INLP
INLM
VREF
INRM
INRP
AVSS
PLIMIT
P
V
DDP
R
OUTP
R1
PVSSR OUTMR2 OUTMR1 P
V
DDM
R
SLEEPN
PROTN
CKOUT
MUTEN
CKIN
NCDRC0
NCDRC1
GAIN0
GAIN1
P
V
DDM
L
OUTML1 OUTML2
PVSSL
OUTP
L1
OUTP
L2
P
V
DDP
L
OUTP
R2
C616
100nF
R627
47K
R743
0R
C671 NC/100P
R640
22K
R638
10K
C629
100nF/0603
R615
NC/7K5
C622
1nF
C612
NC/
1uF/
0805
C664 NC/100P
+
-
I603B
NC/LM358/SO8
5
6
7
8
4
C610 10nF/0603
C609
100nF/0603
R628 10K
E B
C
SO
T
23
Q601
MMBT3904
1
3
2
L605
600R/1.5A L0805
C627
NC/1uF/0603
C639
100uF/16V
R621
22K
C624 1uF/0603
C632
1uF/0805
R737
22K
R606
2K2/0603
R611
10K
R605
NC/10K
R604
NC/1K
R626 NC/82K
C672 NC/100P
R663 10K
+
C658 NC/10u/16V
C618 1uF/0603
C620 1uF/0603
L602 NC
R625
300K
R613
NC
R607
10K
R643 39K
C637
1uF/0603
E
B
C
SOT
23
Q607
MMBT3904
1
3
2
R608
100K 0603
C613 1uF/0805
R612
NC
E
B
C
SOT
23
Q603
MMBT3904
1
3
2
C660
1uF/0603
C668
NC/33nF
R662
NC/
10K
C635
100nF/0603
R644 6.8K
+
C657 NC/10u/16V
P601
CON4 P=2.5mm
1
2
3
4
R+
R-
L-
L+
C605
100nF
C626
1nF
C615 10nF/0603
C636 10nF/0603
R645 39K
R636
NC/6.8K
R648 10K
C606
100nF
C619 1uF/0603
R641 47K
C614
100nF/0603
L610
600R/1.5A 0805
R740 NC/100R
R624
300K
R623
300K
C611
0.47u/63V/DIP
C662
1uF/0603
R610 NC/82K
R620
100R
C630 10nF/0603
C601 1uF/0805
C633
0.47u/63V/DIP
R633
NC/7K5
R661 150K
R632
18K
+
C656
NC/10u/16V
L604 DUAL BEAD 100R
R617 NC/4.7K
R741
NC/22K
C641
330pF
C604
100uF/16V
C603
NC/330uF/16V
C663 NC/100P
L608 22uH DIP
R603 NC/10K
L612
NC/600R/1.5A L0805
C625 1uF/0603
R642 6.8K
+
C659 NC/10u/16V
C642
1uF/0603
R609
10K
R629 100R
C661
1uF/0603
R631
NC
E
B
C
SOT
23
Q604
MMBT3904
1
3
2
R622
NC
C655 100uF/16V
L607 22uH DIP
R739
NC/22K
R616 100R
C628
33nF
L609 22uH DIP
C670 NC/100P
R698 NC/0R
R614
NC
R630
10K
C631
1uF/0805
R639
10K
C617
NC/1uF/0603
R649
10K
D602 NC/1N4148
1 2
R697
0R
R618
NC/6.8K
R660
82K
D601 NC/1N4148
1 2
L606 22uH DIP
MUTE_S/GPIO124
6
PHONE_R 12
PHONE_L 12
5VAMP 2,12
SHUT_DOWN_AU 6
POWER-ON/OFF-GPIO44 6
12V 2
12V 2
5VAMP P2,4,5,6
AU_DACO_0L 6
AU_DACO_0R 6
VCC3.3V-ST 6,13
POWER-SAVING-GPIO98 6
PHONE_DET 12
AU_DACO_1R 6
AU_DACO_1L 6
ViewSonic Corporation 76 VT2430-1M
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