Tuner/Hi-Fi - Sanyo VHR-VT821A Service Manual

A B
8
7
6
TU6001
TCMB0601PD13D
25 26
BB 1
A.IN 2
SDA 3
MB 4
SCL
5
V.IN 6
TU(MD) 7
5
AGC 8 NC
NC 9 NC
AS 10
SCL 11
SDA 12
PB 13
4
+B 14
NC 15 NC
TU 16
17 NC
NC
NC 18 NC
NC 19 NC
3
NC 20
NC
A.OUT 21
SIF 22
AFT 23
V.OUT 24
27 28
2
NOTE:
THE DC VOLTAGE AT EACH PART WAS
1 MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK
A B
51
C D
TUNER/Hi-Fi SCHEMATIC DIAGRAM
AT+5V
W843
RF_CONV.A_OUT
L6001
P.CON+5V
22uH
0305
C6007
RF_CONV.V
6.3V 100 YK
+32V
L5501
100uH
HF1 0305
HF_COM
R6002
IIC_CLK
HF2
1K 1/4W
R6001
IIC_DATA C5501
1K 1/4W
L5502
P.CON+5V
6.3V
100uH
HIFI_H.SW 0305
R5502
HIFI_REC_MUTE
10K
C5503
TP5502
NC
0.1 F
HIFI_ENV.DET
W816
IIC_DATA
IIC_CLK
TU_A_OUT
SIF/TU_A_[R]
AFT_S_CURVE
TU_V_OUT
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C D
E
(SYSCON PCB)
R5504 R5509
39K 39K
3.8 3.9 3.9 0.8 3.8 3.8 0 0.8 3.9 3.9 3.8
33 32 31 30 29 28 27 26 25 24 23
active s-by Vref Iref Supply
10.5
passive s-by
M 3.8
playback
A
level
HID amplification
detector decoder
0.6
BPF
PLL select
HF
1.3MHz 4.6
limiter 1.3MHz TUL +1db 12V
1.4MHz
HF AGC 1.4MHz
0.6 E1L
CCO
RM HF LPF
record current SAP
level
TUR 6.0
M + BPF detector
PLL
0.6 E1R M
1.7MHz
HF 1.7MHz
carrier ratio SAP
1.8MHz
record-mute limiter 1.8MHz
6.0
HF LPF CCO
HID park
R5503 DCL
L
0 hold
R
0
0.01 B 470 noise 5th order rectifier park
suppr. hold DCR
W+FM
0 audio LPF detector AUNT output
select
audio
C5502 24pin E2L
compressor 6.0
clipper CCA
expandor 23pin L + +
5.2 R E2R
noise rectifier
5th order
suppr.
47 KA W+FM + 6.0
audio LPF detector Dub
N
line select
M
0.9 audio 32pin
compressor
clipper +
expandor CCA
33pin
0
RM
auto
env.select(pb)
1.3 HID A
mute
DCL + +
2
I C Hifi detector
MUTE
DCR
vol. vol. 0
DOC +
AUTN right
L Dub left
1.4
INPUT
SAP M
SELECT
3.9
REC
4.2
mute
TUL
TUR
E2L E2R
E1R
1 2 3 4 5 6 7 8 9 10 11
W818
3.8 3.8 3.8 3.8 3.8 3.8 3.8 3.8 3.8
NC NC NC NC 3.8
NC
HI-FI/AUDIO/
CANAL SW IC
IC5501
TDA9605H
CAUTION: SINCE THESE PARTS MARKED BY ARE
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
E
F G
C5524
NORMAL_A_OUT
50V 1 KA
C5529
NORMAL_A_IN
50V 1 KA
NC
NC
AUDIO_OUT-R
C5528
16V 10 KA
C5526
AUDIO_OUT-L
10
16V KA
RF_CONV.A_OUT
C5527
16V 10 KA
R5511
0
3.3M
C5531
16V 10 KA
ATTENTION: 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
7
6
5
4
3
2
PCB010
VMA231
1
H
52