Sanyo VM-6612 User manual

VM-6612
FILE NO.
REFERENCE No.SM5310263
L8MAB/US,XE,UK,AU
NOTE: 1. Parts order must ontain model number, part number, and des ription.
2. Substitute parts may be supplied as the servi e parts.
3. N.S.P. : Not available as servi e parts.
Design and spe ifi ations are subje t to hange without noti e.
(Product Code : 114 901 21)
(U.S. , Canada)
SERVICE M NU L
B/W Video Monitor
CONTENTS
SPECIFICATIONS .................................................................... 3
1. OPERATING INSTRUCTIONS ............................................. 5
2. SERVICE ADJUSTMENTS ................................................... 7
3. PARTS LIST ......................................................................... 9
4. CIRCUIT DIAGRAMS ......................................................... 13
(Product Code : 114 901 24)
(Europe)
VM-6612P
(Product Code : 114 901 26)
(U.K.)
(Product Code : 114 901 28)
( ustralia)

– 2 –
SAFETY PRECAUTIONS
WARNING:
Service should not be attempted by anyone unfamiliar with the necessary precautions for this recording or playback
equipment. The following precautions are necessary during servicing:
1. any electrical and mechanical parts in this recorder have
special safety-related characteristics for providing protec-
tion against shock, fire and other hazards. These charac-
teristics often go unnoticed in a visual inspection, and the
protection afforded by them cannot necessarily be ob-
tained by using replacement components with higher rat-
ings (voltage, wattage, etc.).
2. Replacement parts having special safety-related charac-
teristics are identified in this manual, and in the schematic
diagrams, by the symbol ! . These components have
values that are of special significance to product safety.
Should any component (identified by the symbol ) need
to be replaced, use only the part designated in the parts
List. Do not deviate from the specified resistance, wattage,
and voltage ratings.
3. Before returning the set to the customer, always perform an
AC leakage current check on the exposed metallic parts of
the cabinet, such as terminals, screwheads, metal over-
lays, etc. to be sure that the set is safe to operate without
the danger of electrical shock, Plug the AC line cord directly
into a 120 V AC outlet. (Do not use a line isolation trans-
former during this check.) Use an AC voltmeter with a
sensitivity of 5000 ohms per volt (or more) as follows:
Connect a 1500 ohms, 10 watt resistor, paralleled by a 0.15
mfd, 150 VAC capacitor, between a known good earth
ground (water pipe, conduit, etc.) and the exposed metallic
parts, one at a time. easure the AC voltage across the
1500 ohms resistor and 0.15 mfd capacitor combination.
Reverse the AC plug at the AC outlet and repeat the AC
voltage measurements for each exposed metallic part. The
measured voltage must not exceed 300 mVrms. This
corresponds to 200 µA AC. Any value exceeding this limit
constitutes a potential shock hazard and must be corrected
immediately.
4. Fuse symbol marks.
For CANADA
UNDERWRITERS LABORATORIES Standard
CAUTION "Risk of fire-replace fuse as marked"
For U.S.A.
Fuse rating is marked at
adjacent fuse.
Video
Monitor

– 3 –
EIA standard
12˝ measured diagonally, 90° deflection angle
ore than 800 TV lines (center)
Horizontal: 15.75 kHz (EIA), Vertical: 60 Hz (EIA)
Composite video: 1 line, BNC connector, 1.0 V p-p 75 ohm negative sync
Composite video: 1 line, BNC connector, 1.0 V p-p 75 ohm negative sync
Composite video: 1 line, BNC connector, 1.0 V p-p 75 ohm negative sync
Composite video: 1 line, BNC connector, 1.0 V p-p 75 ohm negative sync
Sub bright volume
Vertical size volume
Vertical hold volume
anual switchable, Hi/ 75 ohm (Lo)
Temperature: -10 °C to 40 °C, Humidity:10% to 90 %
AC 100 to 240 V 50/60 Hz
30 Watts
304 x 320 x 310 mm
7.5 kg
SPECIFICATIONS
VM- 12
System :
Picture tube :
Resolution :
Scanning frewuency :
Input terminals :
VIDEO A
VIDEO B
Outout terminals :
VIDEO A
VIDEO B
Sub Adjusting control :
Termination switch :
Operating environment :
Power source :
Power consumption :
Dimension (W x H x D ) :
Weight :
CCIR standard
12˝ measured diagonally, 90° deflection angle
ore than 800 TV lines (center)
Horizontal: 15.625 kHz (CCIR), Vertical: 50 Hz (CCIR)
Composite video: 1 line, BNC connector, 1.0 V p-p 75 ohm negative sync
Composite video: 1 line, BNC connector, 1.0 V p-p 75 ohm negative sync
Composite video: 1 line, BNC connector, 1.0 V p-p 75 ohm negative sync
Composite video: 1 line, BNC connector, 1.0 V p-p 75 ohm negative sync
Sub bright volume
Vertical size volume
Vertical hold volume
anual switchable, Hi/ 75 ohm (Lo)
Temperature: -10 °C to 40 °C, Humidity:10% to 90 %
AC 100 to 240 V 50/60 Hz
30 Watts
304 x 320 x 310 mm
7.5 kg
VM- 12P
System :
Picture tube :
Resolution :
Scanning frewuency :
Input terminals :
VIDEO A
VIDEO B
Outout terminals :
VIDEO A
VIDEO B
Sub Adjusting control :
Termination switch :
Operating environment :
Power source :
Power consumption :
Dimension (W x H x D ) :
Weight :

– 4 –
WD
H
Fig. 1

(1)
(1)
(1)
(1)
(1)
(1)
(2)
(2)
(2)
(2)
METALTOPCOVER
Fig. 2
DISASSEMBLY

– 5 –
1. OPERATING INSTRUCTIONS
1-1. FRONT PANEL CONTROLS
1. Monitor Selector Switch (VIDEO A/B)
Turn this onitor selector switch A position for a
signal fed through the rear panel VIDEO A
connectors.
Then, turn this onitor selector switch B posi-
tion for a signal fed through the rear panel
VIDEO B connectors.
2. Contrast Control ( CONTRAST)
Turn to adjust picture contrast according to your
requirement.
3. Brightness Control ( BIRGHT)
Turn to adjust picture brightness according to
your requirement.
4. Power Indicator
Lights when the power is on.
Lit: When the power is on.
Unlit: When the power is off.
5. Power Switch (POWER)
Press this switch to turn the power on or off.
1-2. REAR PANEL CONTROLS & CONNECTION
1. AC input socket (AC INPUT)
Connect the AC power cord (supplied) securely
to this socket and to a wall outlet.
2. Video input terminals (VIDEO IN)
These terminals are used to input a video signal
source to this monitor.
Connect to the video output of a VCR or an-
other monitor (for loop through connection) or to
a video camera.
3. Video output terminals (VIDEO OUT)
These terminals are used to output a video
signal for this monitor.
Loop-through output of the video in BNC
connector, then connect to the video input of
another monitor or a VCR.
4. Termination Switch (HI/75 Ω (Lo))
Select the input impedance (HI/75 ohm).
When using only one monitor, turn the termina-
tion switch to the 75 ohm position. When using
more than one monitor, set all of the termination
switch to the monitors to the HI position.
However, the last monitor termination switch
should be the 75 ohm position for proper line
termination.
. Sub-brightness control (SUB-BRI)
Turn to adjust picture brightness.
7. Vertical Size control (V-SIZE)
Turn to adjust picture vertical size of the picture.
8. Vertical hold control (V-HOLD)
If the picture is scrolling up or down on the
screen, turn this control until there is a single
steady picture.
5
4
32
1
Fig. 3

– 6 –
Fig. 5
Fig. 4
Fig.
123
47
8
Single Connection
Monitor
Video recorder
Video camera
To Video B
INPUT terminal
(Video signal cable)
To Video A
INPUT terminal
(Video signal cable)
(Rear panel)
To Video input
terminal
To Video input
terminal
Monitor
Video recorder
Monitor Video recorder
To Video input terminal
Coaxial cable
Video camera

– 7 –
ADJUST ENT
ITE
TI ING
PATTERN SETTING VR
LOCATION ADJUST ENT PROCEDURE
VERTICAL
LINEARITY
ADJUST ENT
HORIZONTAL
HOLD AD-
JUST ENT
GEO ETRICE
DISTORTION
PATTERN
ADJUST ENT
VIDEO
CENTERING
ADJUST ENT
VIDEO TILT
ADJUST ENT
HORIZONTAL
WIDTH AD-
JUST ENT
VERTICAL
SIZE ADJUST-
ENT
VERTICAL
HOLD AD-
JUST ENT
NTERLACE
ADJUST ENT
RASTER
ADJUST ENT
FOCUS
ADJUST ENT
PATTERN GENERATOR
ODE CROSS-HATCHED
PATTERN
PATTERN GENERATOR
ODE CROSS-HATCHED
PATTERN
PATTERN GENERATOR
ODE CROSS-HATCHED
PATTERN
PATTERN GENERATOR
ODE ONOSCPE
PATTERN
PATTERN GENERATOR
ODE CROSS-HATCHED
PATTERN
PATTERN GENERATOR
ODE ONOSCPE
PATTERN
PATTERN GENERATOR
ODE ONOSCPE
PATTERN
PATTERN GENERATOR
ODE ONOSCPE
PATTERN
CA ERA SIGNAL
DISCONNECT VIDEO
SIGNAL AND
PATTERN GENERATOR
ODE FULL-WHITE
PATTERN
PATTERN GENERATOR
ODE ONOSCPE
PATTERN
Adjust VR303 to make equal distance
between top-center and bottom-center.
Turn off horizontal sync. (pin to ground)
Adjust VR401 to make pattern upright.
Adjust eigth magnets on the deflection
yoke make picture to the best condition.
The video is centered by roating the two
small at the rear of the yoke.
Loosen the screw on the rear of deflection
yoke, rotating the yoke to correct position
tighten the screw.
Adjust L402 to make picture width within
"2" position.
Adjust VR302 make height to "1.5"
position.
Adjust VR301 to make pattern stop rolling.
Adjust VR301 have gap of vertical scan
line distinguish clearly.
Adjust VR402 to the suitable brightness.
Adjust VR404 have control picture and 4
corners to be distinguished.
VR303
VR401
L402
VR302
VR301
VR301
VR402
VR404
2. SERVICE ADJUSTMENTS
1357 7531
1
3
5
1
3
5
5
3
1

5
3
1

Fig. 7
CONTRAST VR
AND BRIGHT
VR TO CENTER.
CONTRAST VR
AND BRIGHT
VR TO CENTER.
CONTRAST VR
AND BRIGHT
VR TO CENTER.
CONTRAST VR
AND BRIGHT
VR TO CENTER.
CONTRAST VR
AND BRIGHT
VR TO CENTER.
CONTRAST VR
AND BRIGHT
VR TO CENTER.
CONTRAST VR
AND BRIGHT
VR TO CENTER.
CONTRAST VR
AND BRIGHT
VR TO CENTER.
CONTRAST VR
AND BRIGHT
VR TO CENTER.
CONTRAST VR
AND BRIGHT
VR TO AX.
CONTRAST VR
AND BRIGHT
VR TO CENTER.

– 8 –
T901
VR401
H-HOLD
VR402
SUB-BRITE VR302
V-SIZE
VR404
FOCUS
T402
L402
Q403
E
C
B
VR301
V-LINE
VR406
BRIGHTNESS
SW901 LED1 VR201
CONTRAST

SW202
CHANNEL

AIN BOARD
VR BOARD
VR301
V-HOLD
Fig. 8
Fig. 9
MAIN BOARD
(Foil side)
VR BOARD
(Foil side)

9
3. PARTS LIST
Note:
Alphabetic caracters enclosed by ( ) in the descriptions indicate destination for the V -6612P.
V -6612P(AU): Australia V -6612P(XE): Europe V -6612P(UK): United Kingdom
V -6612: NTSC area (U.S.A., Canada)
LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION
CABINET AND CHASSIS PARTS
1 645 046 5208 FRONT PANEL MT-12S OC-00067
[VM-6612, VM-6612P(UK)]
1 645 047 065 FRONT PANEL MT-12S AA-51
[VM-6612P(AU), (XE)]
2 645 046 04 2 LOGO MT-9AL OC-00067
[VM-6612, VM-6612P(UK)]
2 645 047 0547 LOGO MT-9 AL AA-51 [VM-6612P(AU),(XE)]
645 046 0487 VR KNOB VR MT-9 OC-00067
[VM-6612, VM-6612P(UK)]
645 047 0622 VR KNOB VR MT-9 AA-51 [VM-6612P(AU), (XE)]
4 645 046 0494 SW KNOB MT-9 OC-00067
[VM-6612, VM-6612P(UK)]
4 645 047 06 9 SW KNOB MT-9 AA-51 [VM-6612P(AU), (XE)]
5 645 046 6489 VR ASS’Y MT-12S
6 645 0 4 810 POWER SWITCH SS-160-7
(Included in the VR A’SSY)
7 645 0 4 605 RH W/W SCR. *8MM
8 645 046 5895 CRT MI12 7P4AU2 CPT
OR 645 046 5888 CRT C12M49PW7G-PB SANJIN
9 645 046 6045 YOKE MM-12A
10 645 046 6199 L TYPE MM-12A
11 645 046 6205 L TYPE MM-12A
12 645 0 4 599 PH W/W SCR. 4*18MM
1 645 046 5406 CRT GND WIRE/1015 22AWG
14 645 046 6 5 METAL CABINET MM-12 AA-51
15 645 0 4 582 PH W/W SCR. 4*8MM
16 645 0 4 582 PH W/W SCR. 4*8MM
17 645 0 4 841 ID LABEL 8 *51MM (N.S.P)
18 645 0 4 4299 PCB GUIDE RAIL MM-12A
19 645 046 5970 FBT TRANS. MM-12A (T402)
(Included in the MAIN board)
20 645 0 4 612 SCREW+WASHER *6MM
21 645 046 0401 BNC CONNECTOR BNC 1 -28 75OHM
22 645 046 0418 SLIDE SWITCH SS004-P012BJ-PA6
(SW201)(Included in the MAIN board)
2 645 046 6 42 BASE MM-12AA-51
24 645 0 4 605 RH W/W SCR. *8MM
25 645 0 4 926 FOOT PAD RIVET MM-12A GL-24H
26 645 0 4 4657 FOOT PAD GL-24H
27 645 0 5 6216 BH SCREW 4*6MM
28 645 046 6502 AC SOCKET ASS’Y MM-12A
29 645 046 6410 JACK PLATE MM-12S AA-51
0 645 0 4 582 PH W/W SCR. 4*8MM
1 645 0 5 9422 PCB HOLDER CM-14A
2 645 0 5 9415 PCB HOLDER CM-14A
645 0 8 5599 SHRINK TUBE 2.5DIA. (N.S.P.)
4 645 0 4 575 PH W/W SCR. *8MM
5 645 0 5 622 WASHER OUT TEETH 4.5*8.5*0.5MM
6 645 046 4942 BNC WASHER
7 645 046 4898 BNC NUT
8 645 047 9519 MAIN BOARD
9 645 047 9502 VIDEO BOARD
40 645 046 0500 LED LENS MT-9/12/15/20
40
1
2
4
567
8
11
9
10
12 1
14 15
17
16
20
8
2 24
4
26
25
22
7 27
21
28
5
29
0
6
2
19
1
18
9
VM-6612
N.S.P.: Not available as service parts.

10
ELECTRICAL PARTS
Note:
1. Materials of Capacitors and Resistors are abbreviated as follows ;
Resistors Capacitors
CF RES Carbon Film Resistor MEF CAP Metalli ed Polyester Film Capacitor
MF RES Metal Film Resistor (Non-inductive)
MOF RES Metalli ed Oxide Film Resistor MEMB CAP Mini Box Metalli ed Polyester Capacitor
(Non-inductive)
PEI CAP Polyester Film Capacitor (Inductive)
PPN CAP Polypropylene Film Capacitor (Non-inductive)
PPS CAP Polypropylene and Metalli ed Polypropylene
Film Capacitor (Non-inductive)
MPP CAP Metalli ed Polypropylene Capacitor
(Non-inductive)
X CAP(MKP) Metalli ed Polypropylene Film Capacitor
(Non-inductive)
CC CAP Ceramic Capacitor
EC CAP Electrolytic Capacitor
2. N.S.P. : Not available as service parts.
LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION
AIN BOARD
645 047 9519
(CAPACITORS)
C206 645 0 4 2608 EC CAP 100UF 16 V
C207 645 0 4 27 8 EC CAP 2.2UF 50 V
C208 645 0 4 2714 EC CAP 220UF 16 V
C 01 645 040 8991 PEI CAP .0 UF 50V +/-5%
C 02 645 046 4058 PEI CAP .068UF 50V +/-5%
C 0 645 046 4287 MEMB CAP .1UF 6 V +/-5%
C 04 645 0 4 025 MEMB CAP .22UF 6 V +/-5%
C 05 645 0 4 2615 EC CAP 100UF 25 V
C 06 645 046 9 8 CC CAP PF 50V +/-5%
C 07 645 0 4 025 MEMB CAP .22UF 6 V +/-5%
C 08 645 046 4287 MEMB CAP .1UF 6 V +/-5%
C 09 645 046 4287 MEMB CAP .1UF 6 V +/-5%
C 10 645 046 4287 MEMB CAP .1UF 6 V +/-5%
C 11 645 046 778 EC CAP 4.7UF 25 V
C 12 645 04705 0 EC CAP 2200UF 16V <=1 DIA.
C 1 645 04705 0 EC CAP 2200UF 16V <=1 DIA.
C401 645 046 4027 PEI CAP .00 UF 50V +/-5%
C402 645 0 4 278 EC CAP 470UF 16 V
C40 645 0 4 2677 EC CAP 1UF 50 V
C404 645 0 4 018 MEMB CAP .01UF 6 V +/-5%
C405 645 046 0074 PPN CAP .0056UF 50V +/-5%
C406 645 046 4287 MEMB CAP .1UF 6 V +/-5%
C407 645 046 4287 MEMB CAP .1UF 6 V +/-5%
C408 645 0 4 278 EC CAP 470UF 16 V
C409 645 046 4041 PEI CAP .056UF 50V +/-5%
C410 645 046 4164 MEF CAP .9UF 100V +/-5%
C411 645 046 761 EC CAP 470UF 25V 105C
C41 645 0 4 278 EC CAP 470UF 16 V
C414 645 0 4 2950 PEI CAP .022UF 50V +/-5%
C415 645 04 1 9 CC CAP 10 PF 1.5KV Z5U
C416 645 046 648 EC CAP 1UF 160 V
C417 645 046 570 EC CAP 47UF 160V +/-20%1 *21
C419 645 0 4 2776 EC CAP 47UF 16 V
C421 645 0 4 2875 CC CAP 681PF 50V Y5P
C422 645 04 1 9 CC CAP 10 PF 1.5KV Z5U
C4 0 645 046 891 CC CAP 561PF 1KV Y5P
C902 645 046 4 1 X CAP .22UF 250V +/-10%22.5M
C902 645 046 4 48 X CAP .22UF 275V +/-10%22.5M
C90 645 0 4 087 Y CAP 472PF 400V +/-20%
C904 645 0 4 087 Y CAP 472PF 400V +/-20%
C906 645 0 4 087 Y CAP 472PF 400V +/-20%
C907 645 045 9948 EC CAP 100UF 400V 22DIA.
C908 645 0 4 2622 EC CAP 100UF 5 V
C910 645 04 1 9 CC CAP 10 PF 1.5KV Z5U
C91 645 046 877 CC CAP 91PF 50V Y5P
C915 645 046 4287 MEMB CAP .1UF 6 V +/-5%
C917 645 0 4 018 MEMB CAP .01UF 6 V +/-5%
C918 645 0 4 018 MEMB CAP .01UF 6 V +/-5%
C920 645 046 4119 MEF CAP .22UF 50V +/-5% 7.5MM
C92 645 046 617 EC CAP 1000UF 16V 105C
C924 645 0 4 278 EC CAP 470UF 16 V
(DIODES)
D 01 645 0 4 77 RECTIFIER DIODE 1N400
D401 645 046 4669 RECTIFIER DIODE PS154R
D402 645 046 4690 RECTIFIER DIODE UF5402G
OR 645 046 0289 RECTIFIER DIODE 0DF2
D40 645 0 4 15 DIODE 1N4148
OR 645 0 4 08 DIODE 1N4148
D404 645 046 4652 RECTIFIER DIODE 15DF6
D405 645 0 4 46 RECTIFIER DIODE BYT52M
D406 645 046 4669 RECTIFIER DIODE PS154R
D408 645 0 4 15 DIODE 1N4148
D408 645 0 4 08 DIODE 1N4148
D901 645 046 0241 RECTIFIER DIODE 1N4007
D902 645 046 0241 RECTIFIER DIODE 1N4007
D90 645 046 0241 RECTIFIER DIODE 1N4007
D904 645 046 0241 RECTIFIER DIODE 1N4007
D905 645 046 0258 RECTIFIER DIODE BA159
D906 645 040 9141 RECTIFIER DIODE PG102R
D906 645 046 4645 RECTIFIER DIODE PS104R
D910 645 0 4 15 DIODE 1N4148
D910 645 0 4 08 DIODE 1N4148
D914 645 046 4690 RECTIFIER DIODE UF5402G
OR 645 046 0289 RECTIFIER DIODE 0DF2
D915 645 046 4591 DIODE 1N4606
ZD901 645 046 4607 ZENER DIODE HZ20-2
(FUSE)
F901 645 046 0821 FUSE 2A/250V SLOWBLOW 5*20MM
(INTEGRATED CIRCUITS)
IC 01 645 046 0128 LINEAR IC TDA1175P
IC401 645 046 0104 LINEAR IC LM1 91N
IC901 645 0 4 094 LINEAR IC UC 842AN
(COILS)
L401 645 046 0876 CHOCK COIL 20 UH +/-20%
OR 645 046 088 CHOCK COIL 20 UH +/-20%
OR 645 046 0890 CHOCK COIL 20 UH +/-20%
L402 645 046 08 8 WIDTH COIL VM-14AF
OR 645 046 0852 WIDTH COIL VM-14AF
OR 645 046 0845 WIDTH COIL VM-14AF
L40 645 046 0869 LINEARITY COIL 15 UH +/-20%
L905 645 046 0876 CHOCK COIL 20 UH +/-20%
OR 645 046 088 CHOCK COIL 20 UH +/-20%
OR 645 046 0890 CHOCK COIL 20 UH +/-20%
(SE ICONDUCTORS)
Q205 645 046 4508 TR 2SA1015GR
OR 645 0 4 209 TR 2SA7 P
Q401 645 0 4 216 TR 2SC1815GR
Q402 645 046 0159 TR 2SC1959Y
Q40 645 046 4546 TR 2SC4106M
Q405 645 046 0197 TR 2SD1609C
Q406 645 046 0197 TR 2SD1609C
Q901 645 040 9127 FET SSS7N60A