Toshiba VTW2185 Service Manual page 70

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C D
SECAM CHROMA/Hi-Fi SCHEMATIC DIAGRAM
(VCR PCB)
L5501
AT+11V
100uH 0305
HF1
HF_COM
HF2
L5502
100uH 0305
HF H.SW HF_H.SW
TP5501
NC W879
SDA
W942
SCL
HF_ENV
VCR_A_MUTE
NOTE:THE DC VOLTAGE EACH PART WAS
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK.
C D
E F
R5504 R5509
39K 39K
3.8
3.8 3.9 3.9 0.8 3.8 3.8 0 0.8 3.9 3.9
33 32 31 30 29 28 27 26 25 24 23
active s-by Vref Iref Supply
10.5
passive s-by
M
playback
A
level
HID amplification
detector decoder
0.6
BPF
PLL select
HF
1.3MHz
1.3MHz
1.4MHz limiter TUL +1db 12V
HF AGC 1.4MHz
E1L
0.6 CCO
record current RM HF LPF SAP
level
TUR
BPF
M + detector PLL
0.6
E1R M
1.7MHz HF
1.7MHz
carrier ratio 1.8MHz SAP
1.8MHz
record-mute limiter
CCO
HID HF LPF
C5501 R5503 park
DCL
0 L
hold
R
0.01 B 470 noise 5th order rectifier park
DCR
suppr. hold
audio LPF W+FM
0 detector AUNT output
select
C5502 audio 24pin E2L
compressor
clipper CCA
expandor 23pin L + +
5.2
R E2R
noise rectifier
5th order
suppr.
6.3V 47 KA audio LPF W+FM detector +
Dub
R5511 N line select
0.9 audio M
32pin
compressor CCA
clipper +
expandor 33pin
18K RM
auto
HID env.select(pb)
1.3 A
mute
DCL + +
2
I C Hifi detector
MUTE
DCR
vol. vol.
AUTN DOC +
right
L Dub left
1.4
INPUT
SAP M
C5503 0.1 B
SELECT
REC
4.2
mute
TUL
TUR
E2L
E2R
E1R
1 2 3 4 5 6 7 8 9 10 11
R5502
3.8 3.8 3.8 3.8
NC 3.8 3.8 NC NC 3.8 3.8
10K
HI-FI/AUDIO/
C5504
CANAL SW IC
10P CH IC5501
HF ENV.
TDA9605H
TP5502
NC
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
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C5524
Y/C_AUDIO
3.8
1 B
C5529
NORMAL_A
4.6
1 B
MONITOR_A-R
6.0
MONITOR_A-L
6.0
NC
0 AT+11.5V
NC
VCR/DVD
6.0
NC
6.0
NC
C5526
0
1 B
NC C5525
0
1 F
NC
3.9
AUDIO SW(L CH) IC AUDIO SW(R CH) IC
NC
MM1501XNRE IC5502 IC5503 MM1501XNRE
0
0 6.5 6.5
SW1 Ain1 Ain1 SW1
5.7 0 0
A.OUT GND GND A.OUT
11.1 6.5 6.5
Vcc Ain2 Ain2 Vcc
AUDIO SIGNAL(PB)
AUDIO SIGNAL(REC)
TUNER AUDIO SIGNAL
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VMC296
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