Toshiba 20HL85 Service Manual page 32
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Also See for 20HL85:
- Service manual (61 pages) ,
- Owner's manual (48 pages) ,
- Specifications (2 pages)
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A
B
FROM POWER
8
SOUND+B
P.CON+5V
SOUND_GND
L6603
P.CON+8V
10uH 0305
GND
W877
W878
W879
W880
7
C6603
16V
KANP
6
47
C6637
0.0022
B
C6636
48
0.0022
B
5
C6602
50V
10
C6601
50V
10
YK
4
FROM TUNER/JACK
AV_AUDIO_L
3
AV_AUDIO_R
YUV_AUDIO_L
YUV_AUDIO_R
SIF
AUDIO_MUTE
FROM/TO AV SWITCH
SCL
2
SDA
SW_AUDIO_L[PC]
SW_AUDIO_R[PC]
STEREO_RESET
HP_OUT_R
HP_OUT_L
1
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A
B
G-5
C
STEREO/SOUND AMP SCHEMATIC DIAGRAM
L6601
10uH 0305
0
0
NC
0
NC
0
NC
0
NC
0
NC
0.2
NC
0
NC
4.9
0
0
0
4.9
4.9
4.9
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
0
22
0
0.1
DACM_R
0.1
DACM_L
25 DACA_L
0
26 VREF2
NC
NC
0
NC
DACM_SUB
0
NC
NC
0
NC
NC
STEREO IC
0
IC6601
NC
SC2_OUT_R
MSP3440G-QA-C12-100
3.8
NC
SC2_OUT_L
0
VREF1
3.8
NC
SC1_OUT_R
3.8
NC
SC1_OUT_L
40 CAPL_M
7.1
CAPL_A
YK
8.0
AHVSUP
7.1
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
0
0
3.7
0
3.8
3.8
0
3.8
3.8
0
3.8
0
NC
0
NC
0
NC
3.8
NC
3.8
NC
C6604
470P CH
C6607
0.0015
B
C6605
50V
10
YK
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
C
D
E
(AV PCB)
R6605
100
C6626
22P CH
C6627
22P CH
0
NC
0
NC
0.2
NC
5.0
NC
5.0
NC
5.0
NC
0
NC
1.7
2.5
9
8
7
6
5
4
3
2
1
4.9
0
0
D_CTR_I/O_2
NC
0
80 STANDBYQ
D_CTR_I/O_1
NC
79 ADR_SEL
0
NC
NC
0
NC
NC
4.4
AUDIO_CL_OUT
NC
0
X6601
49
TP
NC
100CT01803
2.4
18.432MHz
C6634
XTAL_OUT
8P CH
1.9
C6635
XTAL_IN
8P CH
0
TESTEN
2.6
C6633
ANA_IN2+
56P CH
1.9
C6631
ANA_IN-
65 AVSUP
56P CH
2.4
C6632
ANA_IN1+
56P CH
4.9
AVSUP
4.9
56
57
58
59
60
61
62
63
64
3.8
2.6
0
0
0
NC
4.8
NC
0
NC
0
NC
C6630
470P
CH
C6628
0.0015
B
C6629
50V
10
YK
CAUTION
:SINCE THESE PARTS MARKED BY
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
D
E
F
G
W827
B301
W5RH3.5X5X1.0
0
0
PGND
PGND
C313
0
2.8
0.1
PGND
OUT+
3.4
2.8
C307
C314
BEEP IN
OUT-
50V
2.2
KA
0.1
3.4
4.5
C308
IN
50V
0.47
KANP
0
15.0
NC
NC
0
15.0
PRE GND
VCC
0
15.0
C303
NC
NC
VCC(SW)
3.0
3.8
25V
10
KA
ON TIME MUTE
SW OUT
0
3.4
NC
NC
SW E
0
3.4
3.4
NC
NC
SW B
3.2
0
C309
R305
3.4
AMP STBY
SW GND
1 B
10K
C305
15.0
0
DC
SW GND
16V
100
KA
3.0
15.0
C315
C310
R304
HP STBY
DC
1
B
10K
16V
47
C311
3.0
3.1
C316
HP IN
HP OUT
C304
50V
2.2
25V
KANP
SOUND AMP
0.001
B
IC301
LA4901-E
0
0
W819
PGND
PGND
C334
0
2.8
0.1
PGND
OUT+
C329
3.4
2.8
C335
BEEP IN
OUT-
0.1
50V
2.2
KA
3.4
4.5
C330
IN
50V
0.47
KANP
0
15.0
NC
NC
0
15.0
PRE GND
VCC
0
15.0
C327
NC
NC
VCC(SW)
3.0
3.8
25V
10
KA
ON TIME MUTE
SW OUT
15.0
0
3.4
NC
SW E
3.4
NC
3.4
0
3.4
NC
SW B
NC
3.2
0
C331
R316
AMP STBY
SW GND
1 B
10K
C328
15.0
0
DC
SW GND
16V
100
KA
3.0
15.0
C332
R315
HP STBY
DC
16V
1 B
10K
3.0
3.1
C333
C338
HP IN
HP OUT
MUTE
C326
50V
2.2
KANP
25V
Q307
SOUND AMP
KTC3875S_Y_RTK
0.001
B
3.0
R328
IC302
LA4901-E
0
6.8K
0
ATTENTION
ARE
:LES PIECES REPAREES PAR UN
ETANT
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
F
G
H
8
TR301
7
HF70T22*10*14
R307
50
F
2.2
1/4W
R308
F
2.2
1/4W
SPEAKER
R
CD301
C3145002
SP301
YDP4010-12
C317
4
16 OHM
3
25V
1000
MHE
2
1
SPEAKER
R
6
SP302
C319
R310
YDP4010-12
2.2
2.2
16 OHM
50V
1/4W
CP301
KA
A2502WV2-4P
15.0
SP OUT L+
4
C320
SW DRIVE
SP OUT L-
3
Q301
SP OUT R-
2
0.0033 B
2SD1802S/T
D301
SP OUT R+
1
21DQ09N
C318
R309
5
KA
0.047
B
10
220
YK
R318
F
2.2 1/4W
51
R319
4
F
2.2 1/4W
C341
R321
2.2
2.2
SW DRIVE
50V
1/4W
Q302
KA
3
2SD1802S/T
C342
0.0033 B
D302
21DQ09N
C337
C339
R320
47
KA
0.047
B
10
220
YK
2
PCBD20
CME030
1
H
G-6
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