SERVICE MANUAL
VIDEO CASSETTE RECORDER
No. 82872
May 2001
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.
HR-S7850EU/S7851EU
Regarding service information other than these sections, refer to the HR-S8850EU service manual (No. 82863).
Also, be sure to note important safety precautions provided in the service manual.
SPECIFICATIONS (The specifications shown pertain specifically to the model HR-S7850EU/HR-S7851EU)
625
INSERT
A.DUB
GENERAL
Power requirement
: AC 220 V 240 V` , 50 Hz/60 Hz
Power consumption
Power on
: 22 W
Power off
: 3.8 W
Temperature
Operating
: 5°C to 40°C
Storage
: 20°C to 60°C
Operating position
: Horizontal only
Dimensions (WxHxD)
: 400 mm x 94 mm x 278 mm
Weight : 3.6 kg
Format : S-VHS/VHS PAL standard
Maximum recording time
(SP)
: 240 min. with E-240 video cassette
(LP)
: 480 min. with E-240 video cassette
(EP)
: 720 min. with E-240 video cassette
VIDEO/AUDIO
Signal system
: PAL-type colour signal and CCIR
monochrome signal, 625 lines 50 fields
Recording system
: DA4 (Double Azimuth) head helical scan
system
Signal-to-noise ratio
: 45 dB
Horizontal resolution
(SP/LP)
: 250 lines (VHS)
400 lines (S-VHS)
(EP)
: 220 lines (VHS)
350 lines (S-VHS)
Frequency range
: 70 Hz to 10,000 Hz (Normal audio)
20 Hz to 20,000 Hz (Hi-Fi audio)
Input/Output
: 21-pin SCART connectors:
IN/OUT x 1, IN/DECODER x 1
RCA connectors:
VIDEO IN x 1, AUDIO IN x 1, AUDIO OUT x 1
S-Video connectors: IN x 1, OUT x 1
TUNER/TIMER
TV channel storage capacity
: 99 positions (+AUX position)
Tuning system
: Frequency synthesized tuner
Channel coverage
: VHF 47 MHz 89 MHz/
104 MHz 300 MHz/
302 MHz 470 MHz
UHF 470 MHz 862 MHz
Aerial output
: UHF channels 22 69 (Adjustable)
Memory backup time
: Approx. 10 min.
ACCESSORIES
Provided accessories
: RF cable,
Infrared remote control unit,
"R6" battery x 2
Specifications shown are for SP mode unless otherwise specified.
E.& O.E. Design and specifications subject to change without
notice.
1
MODEL
HR-S8850EU
HR-S7850EU
HR-S7851EU
ITEM
DIGITAL 3R
USED
NOT USED
MALTU BRAND REMOTE CONTROL
USED
NOT USED
CABLE MOUSE
USED
NOT USED
WINDOW color
GREEN
BLUE
GREEN
IR CORD
A, B
A
TABLE OF CONTENTS
DIFFERENT TABLE .............................................................................................................................................................. 1, 2
4. CHARTS AND DIAGRAMS (4-1 to 4-4)
4.1
2D DIGITAL CIRCUIT BOARD ...................................................................................................................................... 4-1
4.2
2D DIGITAL SCHEMATIC DIAGRAM ........................................................................................................................... 4-2
4.3
REMOTE CONTROLLER SCHEMATIC DIAGRAM ...................................................................................................... 4-4
5. PARTS LIST
5.1
ELECTRICAL PARTS LIST
2D DIGITAL <05>. ............................................................................................................................................................ 5-1
The following table indicate main different points between models HR-S8850EU, HR-S7850EU and HR-S7851EU.
REF.
MODEL
HR-S8850EU
HR-S7850EU
HR-S7851EU
NO
ITEM
306
REMOTE CONTROLLER
LP20873-007A
LP20878-010A
306A
COVER(BATTERY)
LP40254-006A
LP40610-002A
! 310
INST BOOK(EN)
LPT0487-001A
LPT0486-001A
!
INST BOOK(GE)
LPT0487-002A
LPT0486-002A
313
LED CABLE ASSY
QAL0095-005
--
--
PACKING AND ACCESSORY ASSEMBLY <M1>
The following tables indicate different parts number between models HR-S8850EU, HR-S7850EU and HR-S7851EU.
Notes : Mark -- is not used.
Mark
is same as left.
REF.
MODEL
HR-S8850EU
HR-S7850EU
HR-S7851EU
NO
ITEM
! 501
FRONT PANEL ASSY
LP10333-020D
LP10333-033C
LP10333-034C
501A
CASSETTE DOOR
LP20961-010B
LP20961-007B
FINAL ASSEMBLY <M2>
2
Notes : Mark -- is not used.
Mark
is same as left.
REF.
MODEL
HR-S8850EU
HR-S7850EU
HR-S7851EU
NO
ITEM
PW1
MAIN BOARD ASSY
LPA10140-02C
LPA10140-07C
Q11
TRANSISTOR
--
DTC144WU
Q25
TRANSISTOR
DTC144WU
----
Q40
TRANSISTOR
--
DTC144WU
R4
MG RESISTOR
--
NRSA02J-0R0X
R39
MG RESISTOR
--
NRSA02J-103X
R46
MG RESISTOR
NRSA02J-471X
NRSA02J-561X
R117
MG RESISTOR
NRSA02J-104X
----
B12
IM BUS WIRE
--
QUY160-220Y
B13
MG RESISTOR
NRSA02J-0R0X
----
B52
MG RESISTOR
--
NRSA02J-0R0X
X2
CAPACITOR
QCBB1HK-103Y
----
J7105
PIN JACK
QNN0383-002
QNN0381-002
WR1
SIN TWIST WIRE
QUB321-11A1A1
----
MAIN BOARD ASSEMBLY <03>
REF.
MODEL
HR-S8850EU
HR-S7850EU
HR-S7851EU
NO
ITEM
PW1
2D DIGITAL BOARD ASSY
--
LPA10090-07A
2D DIGITAL BOARD ASSEMBLY <05>
REF.
MODEL
HR-S8850EU
HR-S7850EU
HR-S7851EU
NO
ITEM
PW1
3D DIGITAL/2M BOARD ASSY
LPA10105-05A
----
3D DIGITAL/2M BOARD ASSEMBLY <05>
REF.
MODEL
HR-S8850EU
HR-S7850EU
HR-S7851EU
NO
ITEM
PW1
S JACK BOARD ASSY
LPA20009-01B
LPA20009-02B
J7102
S JACK
QND0085-001
QND0084-001
S JACK BOARD ASSEMBLY <36>
Printed in Japan
VICTOR COMPANY OF JAPAN, LIMITED
VIDEO DIVISION
S40894
4-1
SECTION 4
CHARTS AND DIAGRAMS
4.1 2D DIGITAL CIRCUIT BOARD
22
LEVEL
D/A
ADJ
1
12
11
1
34
44
33
23
2D DIGITAL PWB
12
17
LPB10090 -001B
IC1201
B1201
B1202
C1201
C1202
C1203
C1204
C1206
C1208
C1209
C1211
C1212
C1213
C1214
C1215
C1216
C1217
C1218
C1219
C1220
C1221
C1223
C1226
C1227
C1228
R1224
C1230
C1236
C1237
CN1201
D1201
L1202
L1203
L1204
L1205
L1206
L1207
LC1201
Q1202
Q1203
R1201
R1202
R1203
R1204
R1206
R1207
R1210
R1212
R1218
R1219
VR1201
C1239
C1240
C1242
R1221
R1229 C1249
C1244
D1202
D1203
R1223
C1243
C1246
C1247
C1245
C1229
R1228
R1225 R1226
R1230
R1231
R1232
C1250
5
0
LP
A10090
E
B
2D
DIGIT
AL
PWB
ASS'Y
C1205
C1207
C1210
C1222
C1224
C1225
C1231
C1232
C1233
C1234
C1235
L1201
Q1201
R1205
R1208
R1209
R1211
R1213
R1214
R1215
R1216
R1217
B1203
C1238
C1241
L1208
L1209
R1220
R1222
Q1204
B1204
W1241
Q1205
Q1206
R1227
C1248
R1233
REF.NO.
LOCATION
REF.NO.
LOCATION
REF.NO.
LOCATION
REF.NO.
LOCATION
CAPACITOR
C1201
A
D
5D
C1202
B
C
5C
C1203
B
C
1A
C1204
B
C
1A
C1205
B
C
2A
C1206
B
C
3A
C1207
B
C
4A
C1208
B
C
4A
C1209
B
C
4A
C1210
B
C
6B
C1211
A
D
2E
C1212
B
C
2D
C1213
B
C
2D
C1214
5B
D
A
LC1201
OTHER
1E
D
A
VR1201
5A
C
B
R1233
3B
C
B
R1232
4B
C
B
R1231
2A
C
B
R1230
4B
C
B
R1229
4B
C
B
R1228
4B
C
B
R1227
4A
C
B
R1226
4A
C
B
R1225
4C
C
B
R1224
1B
C
B
R1223
4B
C
B
R1222
4B
C
B
R1221
4A
C
B
R1220
4C
C
B
R1219
3C
C
B
R1218
2B
C
B
R1217
2B
C
B
R1216
3B
C
B
R1215
2B
C
B
R1214
1B
C
B
R1213
2B
C
B
R1212
2C
C
B
R1211
3B
C
B
R1210
2D
C
B
R1209
2D
C
B
R1208
2D
C
B
R1207
5A
C
B
R1206
2A
C
B
R1205
1A
C
B
R1204
1A
C
B
R1203
5C
C
B
R1202
5C
C
B
R1201
RESISTOR
4B
C
B
Q1206
3C
C
B
Q1205
4B
C
B
Q1204
3B
C
B
Q1203
2B
C
B
Q1202
5C
D
A
Q1201
TRANSISTOR
5B
D
A
L1209
4B
D
A
L1208
4D
D
A
L1207
3B
D
A
L1206
2B
D
A
L1205
4B
D
A
L1204
4D
D
A
L1203
3E
D
A
L1202
5A
D
A
L1201
COIL
3D
C
B
IC1201
IC
3A
D
A
D1203
2A
D
A
D1202
5C
D
A
D1201
DIODE
5A
D
A
CN1201
CONNECTOR
5A
C
B
C1250
5B
C
B
C1249
4A
C
B
C1248
5C
C
B
C1247
5C
D
A
C1246
5B
C
B
C1245
3B
D
A
C1244
2A
C
B
C1243
5B
D
A
C1242
5B
C
B
C1241
5B
C
B
C1240
5B
C
B
C1239
4B
C
B
C1238
3D
C
B
C1237
4D
C
B
C1236
4D
D
A
C1235
4D
C
B
C1234
4C
D
A
C1233
4C
C
B
C1232
4C
C
B
C1231
4C
C
B
C1230
4C
C
B
C1229
3B
D
A
C1228
3C
C
B
C1227
2B
C
B
C1226
3B
C
B
C1225
3B
C
B
C1224
2B
C
B
C1223
2B
C
B
C1222
2B
C
B
C1221
3B
D
A
C1220
3C
C
B
C1219
2C
C
B
C1218
2C
C
B
C1217
3D
C
B
C1216
2D
D
A
C1215
2D
C
B
COMPONENT PARTS LOCATION GUIDE <2D DIGITAL>
<05> 2D DIGITAL
LPB10090-001B