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SLV-M20HF 3 7 63 1515 0 RMT-V250 SERVICE MANUAL US Model Canadian Model • Refer to the SERVICE MANUAL of VHS MECHANICAL ADJUSTMENT for MECHANICAL ADJUSTMENTS. S MECHANISM (9-921-647-11) SPECIFICATIONS L 13942296513 VIDEO CASSETTE RECORDER u163 MICROFILM http://www.xiaoyu163.com...
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MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
SLV-M20HF SERVICE NOTE 3 7 63 1515 0 1. ERROR CODE INDICATION • Error codes are indicated using the lower 5 digits in the fluorescent display tube. “At this time, Colon “:” between character is not indicated.” Mode code indication when the error has occurred.
SLV-M20HF SECTION 2 DISASSEMBLY 3 7 63 1515 0 NOTE: Follow the disassembly procedure in the numerical order given. 2-1. UPPER CASE, FRONT PANEL BLOCK ASSEMBLY 1 Screws (case) Upper case 3 Connector From CN423 on MA-335 board 4 Hooks...
SLV-M20HF 3 7 6 3 1 5 1 5 0 3-2. VIDEO BLOCK DIAGRAM MA-335 BOARD CN501 (SEE PAGE 4-5,8,15,17,19) OSD V IN OSD V OUT TO/FROM IC501 !º REC/PB OSD V SYNC MG-21 BLOCK OSD H SYNC CJ570 503.5kHz...
SLV-M20HF 4-2. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS There are few cases that the part printed on this diagram isn’t mounted in this model. 3 7 6 3 1 5 1 5 0 MA-335 (REC/PB AMP, VIDEO, SERVO/SYSTEM CONTROL, AUDIO, TUNER) PRINTED WIRING BOARD —...
SLV-M20HF 3 7 6 3 1 5 1 5 0 FR-139 (MODE CONTROL) PRINTED WIRING BOARD There are few cases that the part printed on this diagram isn’t mounted in this model. — Ref. No.: FR-139 Board; 2,000 Series —...
SLV-M20HF 3 7 6 3 1 5 1 5 0 There are few cases that the part printed on this diagram isn’t mounted in this model. There are few cases that the part printed on this diagram isn’t mounted in this model.
SLV-M20HF 3 7 6 3 1 5 1 5 0 AN-16 (INNER SMART FILE SENSOR/WRITER), AN-17 (FRONT SMART FILE SENSOR) PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS There are few cases that the part printed on this diagram isn’t mounted in this model.
SLV-M20HF 3 7 6 3 1 5 1 5 0 MG-21 (CONDUCTOR SIDE) (SMART FILE) PRINTED WIRING BOARD There are few cases that the part printed on this diagram isn’t mounted in this model. — Ref. No.: MG-21 Board; 3,000 Series —...
SLV-M20HF 3 7 6 3 1 5 1 5 0 MG-21 (COMPONENT SIDE) (SMART FILE) PRINTED WIRING BOARD There are few cases that the part printed on this diagram isn’t mounted in this model. — Ref. No.: MG-21 Board; 3,000 Series —...
SLV-M20HF 3 7 6 3 1 5 1 5 0 POWER BLOCK SR821 (SWITCHING REGULATOR) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM There are few cases that the part printed on this diagram isn’t mounted in this model. — Ref. No.: SR821 Board; 9,000 Series —...
http://www.xiaoyu163.com 3 7 63 1515 0 5-6. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTIONS (MA-335 BOARD IC161) Pin No. Pin Name Function Pin No. Pin Name Function RF SWP RF switching pulse output. Not used. AF REC P “H” when HiFi audio REC. AVSS —...
http://www.xiaoyu163.com 3 7 63 1515 0 5-7. TUNER/TIMER MODE CONTROL PIN FUNCTIONS (FR-139 BOARD IC460) Pin No. Pin Name Function Pin No. Pin Name Function N.C. Not used. SEG7 Segment terminal 7 POWER FAIL Power failure detect signal input. SEG8 Segment terminal 8.
SLV-M20HF SECTION 6 ADJUSTMENTS 3 7 63 1515 0 6-1 MECHANICAL ADJUSTMENTS 2-1-3. Input Signal Check Video signal produced by a pattern generator is used as an adjustment signal to perform electrical alignment for this unit. This video signal For the mechanical adjustments, please refer to the must satisfy the specification.
http://www.xiaoyu163.com 3 7 63 1515 0 2-3. SERVO SYSTEM CHECK Unless otherwise specified, set the switches to the following positions. • INPUT SELECT switch ........... LINE 1 • TAPE SPEED switch ..... SP (Remote commander) 2-3-1. RF Switching Position/ AF Switching Position Adjustments (MA-335 Board) [Adjustment Purpose] To adjust the link of the A-ch and B-ch of the tape playback outputs.
http://www.xiaoyu163.com 3 7 63 1515 0 2-4. VIDEO SYSTEM CHECKS 2-4-2. SYNC AGC Check (MA-335 Board) For the video system checks, follow the checking procedures given Mode below as a rule. The color bar video signal supplied from the pattern Signal Color bar generator is used as the video input signal for the video system...
http://www.xiaoyu163.com 3 7 63 1515 0 2-4-4. Recording Chroma Level Check 2-5. AUDIO SYSTEM ADJUSTMENT (MA-335 Board) • For the adjustment of the audio system, perform in the SP mode if there is no special notes. Use the alignment tape. Mode Recording (SP) Signal...
http://www.xiaoyu163.com 3 7 63 1515 0 2-5-3. Overall Output Level and Distortion Factor Check Mode Self-record playback Signal 400Hz, –7.5dBs : CJ570 Measurement point CJ570 Measuring instrument Audio level meter and Distortion meter Specified value Playback Level: –7.5 ± 3dBs Distortion: 4.0% or less [Check Method] 1) Input signal of 400Hz and –7.5dBs to the audio input.
SLV-M20HF SECTION 7 REPAIR PARTS LIST 3 7 63 1515 0 7-1. EXPLODED VIEWS NOTE: • -XX, -X mean standardized parts, so they may • The mechanical parts with no reference number The components identified by mark ! or have some differences from the original one.
http://www.xiaoyu163.com 3 7 63 1515 0 7-1-2. CHASSIS SECTION not supplied supplied Q102 Q101 * AN holder (not supplied) * Antenna (small) L 13942296513 shield plate (not supplied) * When peeling off the antenna (small) shield plate, be sure to apply it to the original position on the AN holder.
http://www.xiaoyu163.com AJ-2 AN-16 AN-17 DM-81 FR-139 3 7 63 1515 0 7-2. ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • RESISTORS When indicating parts by reference number, parts list may be different from the parts All resistors are in ohms. please include the board name.