Toshiba MW26G71 Service Manual page 93

A B
8
7
FROM/TO Hi-Fi
NORMAL_A
Y/C_AUDIO
FSC
HF2
HF_COM
HF1
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
5
1 EP/LP-CH2 (L)
L4501
P.CON+5V_VCR
22uH 0305
4
3
R4504 R4505
CD4501
NORMAL_A
2F061502
12K 12K
FFC
P.CON+5V_VCR
FROM/TO HEAD AUDIO CONTROL
5.2
CP4502
V.REC_ST_H COIL,BIAS OSC
IMSA-9604S-06C
0 L4502
5.3
6 AUDIO REC 1626009
SW Q4503
5 AUDIO PB KRA103SRTK
CTL+
4 CTL+ 6
R4501
CTL-
3 CTL- 5
560
2 AE HEAD(+) 4
0
2 1 AE HEAD(-) 15
R4502
0.7
AUDIO PB SW
10K
Q4501
0
KTC3875S_Y_RTK
FROM/TO FULL ERASE HEAD 0
R4503
0.7
AUDIO PB SW
CP4503
Q4502
10K
B2013H02-2P
KTC3875S_Y_RTK 0
GND
2 FE HEAD(GND)
HOT
1 FE HEAD(HOT)
1
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A B
G-13
C
Y/C/A/HEAD AMP SCHEMATIC DIAGRAM
Y/C/AUDIO/HEAD AMP IC
IC4501
0.5 2.8 0 0 0
LA71206M-MPB-E
60 59 58 57 56
2.2
C4521 COMP OUT
ENV AUDIO C-ROT
C-GND
KILL DET MUTE RF-SW
DET HA SW IN
0.068 B
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
1.8
0
HA
PRE GND
2.0
P H
2.0 L
R
2.0
P
0
A-GND
2.2
1
2 ALC
4.9 3
A-VCC
2.3
ALC
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
L4503 C4529
C4532 8.2K
100uH 0305 6.3V 470 YK
10V 33 KA
C4533
Q4506 AMP
R4509 0.01 B
KTC3875S_Y_RTK
BIAS CTL
680 1/4W 4.8
0 R4527
Q4505
1
KTA1266
L4504
0 330K
2 0
C4537
4.9
100uH 0305
3
4.9
R4511 0.01 B
22K
0 BIAS OSC
Q4504 C4527 R4519
KTC3203_Y
0
3.9K
6.3V 47 KA
0
C
D E
(VCR PCB)
BUFFER
12 Q4507
KTC3875S_Y_RTK
5.0
R4537
4.0
1.8K
3.4
1/4W
C4519
0.1 B
C4558
C4555 6.3V 47 KA
R4544 0.1 B C4561
680K 0.01 B
C4559
0.1 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
SLD PLL
VX01 B
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 2.6
B-UP
C-LPF
CONV
AMP P
VCP
2.0
3.58M
ACC
BPF1
AMP 1
P P R
2
+ 3 4.0
ACC PB-C
REG
4.21M
DET 4V
VIDEO
BPF
2.0
YNR/COMB AGC
Sub
P R R
CONV 2.3
P
1/2
R BAL
DETAIL
CLAMP N.L.
ENH PB-C FBC TC1
DEEM
P
2.3
Y-LPF
R
NL NL Y/C
NC1 P
EMPHA EMPHA MIX
R
R
1.6
P
AGC
FM
TC2
MOD
2.9
R-EQ
NORMAL QV/QH 6DB
TEST
DOUBBLE FM
SUB
LIM 3.6
DEM LPF
SYNC
NC
SEP
R LINE
LPF REC
0
P AMP MAIN
FM-EQ
DE-EM V.SYNC
SEP
4.9
FM PB
VREF S-EQ
P R FM EQ P R P R
AGC Y-VCC
VHS SOPB
REC 2.8
MUTE
AMP
PB,EE
REC:LP<EP
1.8
C4568
PB:EP AUTO PHASE PHASE MAIN
FM
EQ EQ EMPHA S B
BIAS AGC
Y-GND
fo-ADJ Q-ADJ FIL FIL DET 50V
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
2.5 2.3 2.2 2.3 2.4 5.0 1.0 1.0 1.7 1.4 0 0 1.5 0.1 2.2
NC
C4551
13
390P CH
C4552
R4532
0.1 B
22K
NC
C4542
820P CH
14
NOTE:THE DC VOLTAGE EACH PART WAS
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK.
D E
F G
BUFFER
Q4509
KTA1504S_Y_RTK
1.7
2.3
0
R4557
82K 1/4W
C4565
R4560
50V 1 KA 100K
C4574
50V 1 KA
C4570
50V 1 KA
C4566
50V 1 KA
C4575
25V 10 KA
C4569
0.1 B
C4576_1
C4567 16V 10 KANP
50V 0.22 KA
C4572
C4564 25V 10 KA
10V 33 KA
DUMMY_V.SYNC
L4509
P.CON+5V_VCR
KTA1504S_Y_RTK 22uH 0305
R4517
Q4508
BUFFER
1/4W 560
5.1
1 KA
4.5
0
R4562
11 VIDEO_OUT
1/4W 180
W874
P.CON+9V_VCR
BUFFER
Q4511
5.0
KTA1504S_Y_RTK
C4580
2.0
0
0.1 B
C4581
16V 100 KA
15.6KHZ TRAP
L4507
STP-01064
NC
Y/C_AUDIO
CAUTION: DIGITAL TRANSISTOR
F G
H
8
7
FROM/TO SYSCON/SERVO/TIMER
6
H.SW
VIDEO_OUT
ENV_DET
CTL+
CTL-
DUMMY_V.SYNC
V.REC_ST_H
FSC
VCR_A_MUTE
Y/C_CLK
Y/C_DATA
Y/C_CS
5
C_ROTARY
H.AMP_SW1
COMP
FROM/TO CHROMA/PROGRESSIVE/PIN
VD
FROM/TO REGULATOR
DVD_VIDEO
P.CON+5V_VCR 4
P.CON+9V_VCR
GND
FROM/TO TUNER/AV
MONI_CVBS
3
2
PCB010
DME022
1
H
G-14