Toshiba MW14F52 Service Manual page 70

A B
8
FROM REGULATOR
P.CON+8V
7 P.CON+5V_A
GND
AT+5V
FROM/TO Hi-Fi/DEMODULATOR
NORMAL_A
Y/C_AUDIO
FSC
HF2
HF_COM
HF1
GND
6
FROM/TO CYL
CP4501
TOC-C09X-A1
9 HF1 (R)
8 HF COM
7 HF2 (L)
6 SP-CH1 (R)
5 SP COM
4 SP-CH2 (L)
3 EP/LP-CH1 (R)
2 EP/LP COM
1 EP/LP-CH2 (L)
5
L4501
P.CON+5V_A
22uH
0305
4
R4504 R4505
3 NORMAL_A
6.8K 8.2K
SW
FROM/TO HEAD AUDIO CONTROL
Q4503
KRA103SRTK
P.CON+5V_A
CP4502
5.2
IMSA-9604S-06C 0
W846
V.REC_ST_H COIL,BIAS OSC
6 AUDIO REC
L4502
5.3
5 AUDIO PB 1626009
CTL+
4 CTL+
CTL-
3 CTL- 6
R4501
2 AE HEAD(+) 17 5
560
1 AE HEAD(-) 4
0
CD4502 AUDIO
R4502
0.7
2
PB SW
Q4501
10K
2F061502
KTC3875S_Y_RTK
0
AUDIO
TO FULL ERASE HEAD PB SW 0
R4503
Q4502 0.7
CP4503
KTC3875S_Y_RTK
10K
B2013H02-2P
0
GND
2 FE HEAD(GND)
HOT
1 FE HEAD(HOT)
1
A B
G-9
C
Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM
S804Y S804X
W861
W809
Y/C/AUDIO/HEAD AMP IC
IC4501
LA71205M-MPB
0.5 2.8 0 0 0
60 59 58 57 56
2.2
C4521 COMP OUT
ENV AUDIO C-ROT C-GND
DET MUTE
KILL RF-SW
0.068 B DET HA SW IN
0
HA
GND
4.0
C4522
CHROMA
DET
0.047 B
1.8
C4514
ACC
DET
0.047 B
0.7
P
0.7
R
0.7 H
P
L
5.0
HA VCC
1.7
R4513
1K +-1%
1.8
0
HA
PRE GND
2.0
P H
2.0 L
R
2.0
P
0
A-GND
2.2
W802
1
ALC
2
4.9 3
A-VCC
2.3
ALC
W812
DET
C4523 0
PB,EE
EQ
16V 22 KA 2.0
C4517 AMP
SP,LP
Vref
0.1 B C4524
2.3V
1 2 3 4
C4518
0.1 B
2.2 2.2 2.3 2.2 2.2
R4512
6.3V 220 KA
R4526
10 1/4W
C4529
C4532 6.8K
W877
6.3V 470 YK
10V 33 KA
C4533
R4509 0.01 B
BIAS CTL
680 R4527
Q4505
4.8
1 L4504
KTA1266
330K
0
2
0
4.9 C4537
100uH 0305
3 AMP
0
4.9
R4511 Q4506 0.01 B
2SC2412K
22K
0 BIAS OSC
Q4504 C4527 R4519
KTC3203_Y
0
2.2K
6.3V 47 KA
0
CAUTION: DIGITAL TRANSISTOR NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
C
D E
(VCR MT PCB)
14
R4538
1.8K
C4558
C4555
6.3V 47 KA
R4544 0.1 B C4561
680K 0.01 B
NC
4.8 4.8 4.8 5.0 1.9 2.6 4.0 3.3 3.3 5.0 5.0 0 2.2 0.8
2.3
55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
0
ALWAYS VDD 4Fsc CLOCK
C-VCC
SERAIL 5V
320FH VSS
VX01 SLD B PLL
DECODER VCO
1.7
P R
TIMMING OUT
OUT
0
REC PB REC
APC APC AFC DRIVER AUTO-BIAS
VSS 3.0
CCD CLAMP
BEFORE IN
R P
BGA
2.8
BGA
AFTER
CNC
BGA 3.1
R P
VCA
PB VCA
AMP
P R
3.58M 3.1
BPF2
CLAMP
B.D
Main B-UP 2.6
C-LPF
CONV AMP P
VCP
2.0
ACC 3.58M
BPF1
AMP 1
P P R
2
+ 3 4.0
PB-C
ACC REG
4.21M
4V
DET VIDEO
BPF
AGC 2.0
YNR/COMB
Sub
R R
CONV P
P 2.3
1/2
R BAL
DETAIL N.L.
CLAMP
ENH PB-C FBC TC1
P DEEM
2.3
Y-LPF
NL R
NL Y/C
NC1
P
EMPHA EMPHA R MIX
R
1.6
P
AGC
FM
TC2
MOD
2.9
R-EQ
NORMAL
QV/QH 6DB
TEST
DOUBBLE FM SUB
LIM DEM LPF 3.6
SYNC
NC
SEP
R LINE
REC
LPF 0
AMP MAIN
P FM-EQ
DE-EM V.SYNC
SEP
4.9
FM PB
VREF S-EQ
P R AGC FM EQ P R P R Y-VCC
VHS SOPB
2.8
REC
MUTE
AMP
PB,EE
REC:LP<EP
1.8
C4568
PB:EP AUTO PHASE PHASE FM MAIN
BIAS EQ EQ EMPHA S B
AGC
Y-GND
Q-ADJ DET
fo-ADJ FIL FIL 50V 0.33
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
0
2.5 2.3 2.2 2.3 2.4 5.0 1.0 1.0 1.7 1.4 0 1.5 0.1 2.2
NC
C4551
390P CH
C4552
R4532
0.1 B
22K
NC
C4542
820P CH
16
NOTE:THE DC VOLTAGE EACH PART WAS
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
D E
F G
AT+5V
Y/C_VIDEO
SW_AUDIO_OUT_R
SW_AUDIO_OUT_L
BUFFER
Q4509
2SA1037AK
1.7
2.3
0
R4557
C4565 68K 1/4W
R4560
25V 10 KA 100K
C4574
C4570 50V 1 KA
C4566 50V 4.7 KA
50V 1 KA C4572
TUNER_VIDEO
50V 1 KA
C4569
0.1 B
FRONT_V_IN
C4567
50V 0.22 KA
C4576
C4564 50V 1 KANP
10V 33 KA
DUMMY_V.SYNC
L4509_1
100uH 0607
P.CON+5V_A
13
R4550
Y/C_VIDEO
2.2M
BUFFER
KA
Q4511
VIDEO_OUT
5.0
2SA1037AK
W874
P.CON+8V
0
5.0
C4580 C4579
0.1 B 0.1 B
C4581
16V 100 KA
W864
Y/C_AUDIO
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK.
F G
H
8
R4552
TEST POINT
100 1/4W
CP4504_1
A2001WV2-5P
W867_1
SW AUDIO OUT R 1
AT+5V 2
GND 3
7
Y/C VIDEO 4
W868
SW AUDIO OUT L 5
FROM/TO MICON
Y/C_CLK
Y/C_DATA
Y/C_CS
H.SW
VIDEO_OUT
6
ENV_DET
VCR_A_MUTE
CTL+
CTL-
C_ROTARY
DUMMY_V.SYNC
V.REC_ST_H
H.AMP_SW1
COMP
Y/C_VIDEO
GND
5
FROM/TO CHROMA/IF
V.SYNC
Y/C_VIDEO
FROM DVD IN/OUT
DVD_VIDEO
4
GND
SW_AUDIO_OUT_L
SW_AUDIO_OUT_R
FROM IN/OUT
FRONT_V_IN
TUNER_VIDEO
3
GND
FROM/TO SOUND AMP
GND
2
PCB010
DME033
1
H
G-10