VC-S2000 (serv.man2). Service manual page 01 to 52 - Sharp VCR Service Manual (repair manual)

vc-s2000 (serv.man2) service manual
Model
VC-S2000 (serv.man2)
Pages
52
Size
1.2 MB
Type
PDF
Document
Service Manual
Brand
Device
VCR / Service manual page 01 to 52
File
vc-s2000-sm2.pdf
Date

Read Sharp VC-S2000 (serv.man2) Service Manual online

1
VC-S2000HM
VIDEO CASSETTE RECORDER
SERVICE MANUAL
Page
1. SPECIFICATIONS ................................................................................................................. 3
2. DISASSEMBLY AND REASSEMBLY ................................................................................... 4
3. FUNCTION OF MAJOR MECHANICAL PARTS ................................................................... 7
4. ADJUSTMENT, REPLACEMENT AND ASSEMBLY OF MECHANICAL UNITS .................. 9
5. ELECTRICAL ADJUSTMENT ............................................................................................. 28
6. MECHANISM OPERATION FLOWCHART AND TROUBLESHOOTING GUIDE .............. 31
7. ELECTRICAL TROUBLESHOOTING ................................................................................. 37
8. BLOCK DIAGRAM ............................................................................................................... 53
9. SCHEMATIC DIAGRAM AND PWB FOIL PATTERN ......................................................... 63
10. REPLACEMENT PARTS LIST ............................................................................................ 81
11. EXPLODED VIEW OF MECHANICAL PARTS ................................................................... 92
12. PACKING OF THE SET ...................................................................................................... 96
SHARP CORPORATION
MODEL
In the interests of user-safety (Required by safety regulations in some
countries) the set should be restored to its original condition and only
parts identical to those specified be used.
VC-S2000HM
S80G3VC-S2000
 CONTENTS
2
VC-S2000HM
PRECAUTIONS IN PART REPLACEMENT
When servicing the unit with power on, be careful to the section marked white all over.
This is the primary power circuit which is live.
When checking the soldering side in the tape travel mode, make sure first that the tape has been loaded and then turn over
the PWB with due care to the primary power circuit.
Make readjustment, if needed after replacement of part, with the mechanism and its PWB in position in the main frame.
(1) Start and end sensors: Q701 and Q702
Insert the sensor’s projection deep into the upper hole of the holder. Referring to the PWB, fix the sensors tight
enough.
(2) Photocoupler: IC901 and IC902
Refer to the symbol on the PWB and the anode marking of the part.
(3) Cam switches A and B: D708 and D705.
Adjust the notch of the part to the white marker of the symbol on the PWB. Do not allow any looseness.
(4) Take-up and supply sensors: D711 and D712.
Be careful not to confuse the setting direction of the parts in reference to the symbols on the PWB. Do not allow any
looseness.
3
VC-S2000HM
1. SPECIFICATIONS
Format: VHS PAL / S-VHS / S-VHS ET standard
Video recording system: Two rotary heads, helical scan system
Video signal: PAL colour and I signals, 625 lines
Recording/playing time: 240 min max. with SHARP E-240 tape (SP mode)
480 min max. with an E-240 tape (LP mode)
720 min max. with an E-240 tape (EP mode)
Tape width: 12.7mm
Tape speed: 23.39 mm/s (SP mode)
11.70 mm/s (LP mode)
7.8 mm/s (EP mode)
Antenna: 75 ohm unbalanced
Receiving channel: VHF Channel E2-E12, S1-S41
UHF Channel E21-E69
RF converter output signal: UHF Channel E21-E69 (Preset to CH E36)
Power requirement: AC220V ~ 240V, 50Hz
Power consumption: Approx. 19W
1.5W max. (at Low power mode)
Operating temperature: 5
°
C to 40
°
C
Storage temperature: –20
°
C to 55
°
C
Weight: Approx. 4.3 kg
Dimensions: 430 mm (W) x 300 mm (D) x 91.5 mm (H)
VIDEO
Input: 1.0 Vp-p, 75 ohm
Output: 1.0 Vp-p, 75 ohm
Horizontal resolution: 250 lines (SP mode)
AUDIO 0 dBs = 0.775 Vrms
Input: Line1: -3.8 dBs, 10k ohm
Line 2:-3.8 dBs, 10k ohm
Line 3:-3.8 dBs, 47k ohm
Output: Line1: -3.8 dBs, 1k ohm
Line 2:-3.8dBs, 1k ohm
Hi-Fi Dynamic Range: 90 dB TYP
Hi-Fi Wow and Flutter: 0.005%
Hi-Fi Frequency Responce: 20 Hz ~ 20 kHz
Accessories included: 75 ohm coaxial cable
Operation manual
Infrared remote control
Battery
                                         Note: The antenna must correspond to the new standard DIN 45325
(IEC 169 - 2) for combined UHF/VHF antenna with 75 ohm connector.
As part of our policy of continuous improvement, we reserve the
right to alter design and specifications without notice.
4
VC-S2000HM
2. DISASSEMBLY AND REASSEMBLY
2-1  DISASSEMBLY OF MAJOR BLOCKS
D
c
b
a
c
b
a
B
C
A
C1
D
B
A
1
1
2
4
4
4
6
6
7
5
8
9
9
10
11
12
14
13
18
15
15
16
17
19
C1
3
3
C
TOP CABINET
: Remove 4 screws 
1
.
FRONT PANEL
: Remove 2 screws 
2
 and 7clips 
3
.
PWB HOLDER
: Remove 3 screws 
4
.
OPERATION (L) : Take it out of connector 
5
, 3 clips
PWB
6
 and 2 clips 
7
.
OPERATION (R) : Remove 3 clips 
9
.
PWB
FUNCTION PWB : Remove 4 connectors 
0
TERMINAL PWB : Remove 3 screws 
q
, 1 screw 
w
,
1 screw 
e
 and 2 connector 
r
.
MECHANISM/
: Remove 2 screws 
t
, 2 screws 
y
,
MAIN PWB
2 screws 
u
, and 1 hook 
i
.
ANTENNA
: Remove 1 screw 
o
.
TERMINAL
COVER
TOP CABINET
FRONT PANEL
OPERATION (L)
PWB
OPERATION (R)
PWB
PWB HOLDER
FUNCTION PWB
TERMINAL PWB
MECHANISM
ANTENNA
TERMINAL
COVER
Page of 52
Display

Download Sharp VC-S2000 (serv.man2) Service Manual (Repair Manual)

Here you can read online and download Sharp VC-S2000 (serv.man2) Service Manual in PDF. VC-S2000 (serv.man2) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp VC-S2000 (serv.man2) VCR. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.