Toshiba VTW21FQR Service Manual - Page 24
Browse online or download pdf Service Manual for TV Toshiba VTW21FQR. Toshiba VTW21FQR 37 pages. Combination 21" flat tv and video cassette recorder/dvd video player/ tele text
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A
B
8
7
6
5
4
3
2
1
A
B
H-23
C
SECAM CHROMA/Hi-Fi SCHEMATIC DIAGRAM
HF H.SW
HF_H.SW
TP5501
NC
SDA
SCL
HF_ENV
VCR_A_MUTE
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
NOTE:THE DC VOLTAGE EACH PART WAS
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK.
C
D
E
(VCR PCB)
R5504
39K
3.8
3.9
3.9
0.8
3.8
3.8
0
33
32
31
30
29
28
27
L5501
active s-by
Vref
Iref
Supply
AT+11V
10.5
passive s-by
100uH 0305
playback
A
level
HID
amplification
HF1
0.6
detector
BPF
PLL
HF
1.3MHz
1.3MHz
limiter
HF AGC
1.4MHz
1.4MHz
HF_COM
0.6
CCO
record current
RM
HF LPF
level
BPF
M +
detector
PLL
0.6
HF2
1.7MHz
HF
1.7MHz
carrier
ratio
1.8MHz
record-mute
limiter
1.8MHz
HF LPF
CCO
HID
C5501
R5503
0
0.01 B
470
noise
rectifier
5th order
suppr.
audio LPF W+FM
detector
0
AUNT
audio
24pin
C5502
compressor
L5502
clipper
expandor
CCA
23pin
L
5.2
R
noise
5th order
rectifier
suppr.
6.3V
47
KA
audio LPF W+FM
detector
100uH 0305
R5511
N
0.9
audio
32pin
compressor CCA
clipper
+
expandor
33pin
18K
RM
W879
env.select(pb)
1.3
HID
A
DCL
2
I C
Hifi detector
DCR
vol.
vol.
AUTN DOC
+
right
W942
L
Dub
left
1.4
SAP
C5503 0.1 B
4.2
TUL
TUR
1
2
3
4
5
6
7
R5502
3.8
3.8
3.8
3.8
NC
NC
NC
10K
C5504
Hi-Fi/AUDIO/
CANAL SW IC
10P CH
IC5501
HF ENV.
TDA9605H
TP5502
NC
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
D
E
F
G
R5509
39K
3.8
0.8
3.9
3.9
26
25
24
23
C5524
M
3.8
1
B
C5529
decoder
select
4.6
TUL
+1db
12V
1
B
E1L
SAP
TUR
6.0
E1R
M
SAP
6.0
park
DCL
L
hold
NC
R
0
park
DCR
hold
output
NC
select
E2L
6.0
+
+
E2R
NC
+
6.0
Dub
line select
M
NC
0
auto
mute
C5526
+
+
NC
MUTE
0
1
B
C5525
NC
INPUT
M
SELECT
3.9
AUDIO SW(L CH) IC
1
F
REC
mute
NC
IC5502
MM1501XNRE
E2L
E2R
0
E1R
0
6.5
8
9
10
11
SW1
Ain1
3.8
3.8
3.8
3.8
5.7
0
A.OUT
GND
11.1
6.5
Vcc
Ain2
W852
W854
AUDIO SIGNAL(PB)
AUDIO SIGNAL(REC)
TUNER AUDIO SIGNAL
F
G
H
8
7
6
5
Y/C_AUDIO
NORMAL_A
MONITOR_A-R
MONITOR_A-L
AT+11.5V
VCR/DVD
4
AUDIO SW(R CH) IC
IC5503
MM1501XNRE
6.5
0
Ain1
SW1
0
5.7
GND
A.OUT
3
6.5
11.1
Ain2
Vcc
2
PCB010
DMD027
1
H
H-24