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See also:
Instruction Manual
SERVICE MANUAL
Colour Video Monitor
CONTENTS
SPECIFICATIONS .................................................................... 2
1. OPERATING INSTRUCTIONS ............................................. 3
2. SERVICE ADJUSTMENTS ................................................... 5
3. PARTS LIST ......................................................................... 8
CIRCUIT DIAGRAMS & PRINTED WIRING BOARDS ........... C1
The components designated by a symbol (
special significance to product safety. Should any component designated by a symbol need to be replaced, use only the
part designated in the Parts List. Do not deviate from the resistance, wattage, and voltage ratings shown.
NOTE: 1. Parts order must contain model number, part number, and description.
2. Substitute parts may be supplied as the service parts.
3. N.S.P. : Not available as service parts.
Design and specifications are subject to change without notice.
L8MZ5/XE,UK,AU
PRODUCT SAFETY NOTICE
) in this schematic diagram designates components whose value are of
FILE NO.
VMC-8621P
(Product Code : 114 951 30)
(Europe)
(Product Code : 114 951 31)
(U.K.)
(Product Code : 114 951 32)
(Australia)
REFERENCE No.SM5310339
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Summary of Contents for Sanyo VMC-8621P
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Page 1: Service Manual
FILE NO. SERVICE MANUAL Colour Video Monitor VMC-8621P (Product Code : 114 951 30) (Europe) (Product Code : 114 951 31) (U.K.) (Product Code : 114 951 32) (Australia) CONTENTS SPECIFICATIONS ..............2 1. OPERATING INSTRUCTIONS ..........3 2. SERVICE ADJUSTMENTS ........... 5 3. -
Page 2: Specifications
SPECIFICATIONS Color system : PAL/NTSC, selected automatically Picture tube : 21 inch Resolution : More than 450 TV lines Input terminals : Separate Y/C signal, mini-DIN connector (1) Y signal: 1.0 Vp-p, 75 ohm negative sync C signal: 0.286 Vp-p, 75 ohm negative sync, bridge connection possible Composite sync signal: 1.0 Vp-p, 75 ohm BNC connector (2) Audio signal: -6dBs (400 mVrms), RCA pin (3), bridge connection possible Outout terminals :... -
Page 3: Operating Instructions
1. OPERATING INSTRUCTIONS 1-1. FRONT PANEL CONTROLS 2 4 5 SCAN Fig. 2 6. Underscan/overscan select button (SCAN) 1. Speaker The initial setting is for the normal screen When the monitor selector button (A, B or Y/C) (overscan). If the SCAN button is pressed, the is pressed, the speaker lets you hear the sound screen will become smaller (underscan) than from the components which are connected to... - Page 4 1-2. REAR PANEL CONTROLS & CONNECTION Fig. 3 1. AC INPUT socket Connect the AC power cord (supplied) securely to this socket and to a wall outlet. 2. Rear A terminals (AUDIO/VIDEO A terminals) When the monitor A selector button at the front of the monitor is pressed, the audio and video signals from the component which is connected to these terminals can be monitored.
- Page 5 2. SERVICE ADJUSTMENTS 1. Supply power to the set and measuring instruments and allow to warm up for at least 30 minutes. NOTE Be sure to use a non-metallic driver for adjusting there VRs. A metallic driver can cause damage by shorting. Adjustment tool 1.
- Page 6 ADJUSTMENT TIMING ADJUSTMENT PROCEDURE SETTING ITEM LOCATION PATTERN VR801,VR803, Adjust VR805 G-Bias to center. BRIGHT VR , WHITE BAL- PATTERN GENERATOR VR805, Adjust FBT screen VR make luminance CONTRAST VR ANCE AD- NO SIGNAL FBT FOCUS without video to 2.0 ~ 4.0 FL. and SHARPNESS JUSTMENT Adjust VR801 make X value is 0.313 ±...
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Page 7: Main Board
MAIN BOARD (Parts side) 10 9 8 VR503 VR401 X-RAY H-PHASE ZD501 T502 VR501 VR303 IC202 V-CENTER VR306 H-SIZE IC301 VR301 VR302 V-LIN V-SIZE F901 T902 D910 Fig. 4 VR801 VR804 VR803 B-BAIS R-BAIS R-GAIN Q804 VR802 VR805 LED101 S103 B-GAIN G-BAIS S107... -
Page 8: Parts List
DESCRIPTION 645 046 4928 RUBBER WASHERDIA20*DIA6*1T ACCESSORIES & PACKING MATERIALS 645 046 4966 WASHER 6.5*19*1MM 645 052 5339 USER MANUAL VMC-8621P 645 046 4843 PH SCREW 6*12MM 645 034 3971 POWER CORD 10-1 VDE, 645 052 5414 DEGAUSSING COIL CM-21DUA... - Page 9 ELECTRICAL PARTS Note: 1. Materials of Capacitors and Resistors are abbreviated as follows ; Resistors Capacitors CF RES Carbon Film Resistor MEF CAP Metallized Polyester Film Capacitor MF RES Metal Film Resistor (Non-inductive) MOF RES Metallized Oxide Film Resistor MEMB CAP Mini Box Metallized Polyester Capacitor (Non-inductive) PEI CAP...
- Page 10 LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION C227 645 055 0249 EC CAP. 470UF 16V +/-20% C926 645 034 3025 MEMB CAP. .22UF 63V +/-5% C228 645 034 2783 EC CAP. 470UF 16 V C928 645 055 0102 EC CAP. 100UF 16 V C229 645 045 9962 EC CAP.
- Page 11 LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION Q102 645 034 3216 TR 2SC1815GR R159 645 034 1854 CF RES. 1KOHM 1/6W +/-5% Q103 645 034 3216 TR 2SC1815GR R160 645 046 2276 CF RES. 1.2KOHM 1/6W +/-5% Q104 645 034 3216 TR 2SC1815GR R161 645 046 2696...
- Page 12 LOCATION PARTS NO. DESCRIPTION LOCATION PARTS NO. DESCRIPTION R905 645 034 2516 MOF RES. 47KOHM 3W +/-5% FUNCTION BOARD VMC-8621P R906 645 034 2547 CEMENT RES. 10KOHM 5W +/-5% 645 052 5520 R907 645 046 2160 CF RES. 10OHM 1/6W +/-5%...
- Page 13 LOCATION PARTS NO. DESCRIPTION C217 645 046 3556 EC CAP. 100UF 16V +/-20% C201 645 046 3549 EC CAP. 10UF 25V +/-20% C202 645 046 3549 EC CAP. 10UF 25V +/-20% C208 645 046 3549 EC CAP. 10UF 25V +/-20% C209 645 046 3549 EC CAP.
- Page 14 CIRCUIT DIAGRAMS & PRINTED WIRING BOARDS TABLE OF CONTENTS BLOCK DIAGRAM AND CIRCUIT DIAGRAMS OVERALL WIRING ............................C1 BLOCK DIAGRAM ............................C1 MAIN BOARD & CONTROL KEY BOARD ....................... C2 SIGNAL BOARD & VIDEO BOARD ........................C5 PRINTED WIRING BOARDS (P.W.B.) MAIN P.W.B.&...
- Page 16 R131 608 R130 390 R129 2.2K R128 1K R127 91 R166 2.2K R167 10K CONTROL C.P.U. (TO MAIN BOARD B101) TO CONTROL KEY BOARD P101 AND P102...
- Page 19 (TO MAIN BOARD P201)