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SONY CX-LEM220
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of SONY CX-LEM220 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 12 (click to view)
CX-LEM220 SECTION 5 MECHANICAL ADJUSTMENTS
TAPE MECHANISM DECK SECTION
Precaution 1. Clean the following parts with a denatured alcohol-moistened swab: record/playback heads pinch rollers erase head rubber belts capstan idlers 2. Demagnetize the record/playback head with a head demagnetizer. 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the rated power supply voltage unless otherwise noted. Torque Measurement
Mode FWD Torque meter CQ-102C Meter reading 2.94 mN � m to 7.84 mN � m 31 to 71 g � cm (0.43 � 0.98 oz � inch) 0.14 mN � m to 0.59 mN � m 2 to 6 g � cm (0.02 � 0.08 oz � inch) 6.86 mN � m to 17.64 mN � m 71 to 143 g � cm (0.98 � 1.99 oz � inch) more than 0.98 N � m 100 g or more (3.53 oz or more)

SECTION 6 ELECTRICAL ADJUSTMENTS
DECK SECTION 0 dB = 0.775 V

Precaution 1. Demagnetize the record/playback head with a head demagnetizer. 2. Do not use a magnetized screwdriver for the adjustments. 3. After the adjustments, apply suitable locking compound to the parts adjust. 4. The adjustments should be performed with the rated power supply voltage unless otherwise noted. 5. The adjustments should be performed in the order given in this service manual. (As a general rule, playback circuit adjustment should be completed before performing recording circuit adjustment.) 6. The adjustments should be performed for both L-CH and RCH. 7. Switches and controls should be set as follows unless otherwise specified. Test Tape
Tape P-4-A100 WS-48B Signal 10 kHz, �10 dB 3 kHz, 0 dB Used for Azimuth Adjustment Tape Speed Check

FWD back tension

CQ-102C

FF/REW

CQ-201B

FWD tension

CQ-403A

Record/Playback Head Azimuth Adjustment Procedure: 1. Mode: Playback
test tape P-4-A100 (10 kHz, � 10 dB) MAIN board SPEAKER terminal (J302) L-CH, R-CH

level meter
set + �

2. Turn the adjustment screw and check output peaks. If the peaks do not match for L-CH and R-CH, turn the adjustment screw so that outputs match within 1dB of peak.

L-CH peak Output level

within 1dB within 1dB

Screw position

R-CH peak L-CH peak R-CH peak

Screw position

12

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