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Home >> AIWA >> 4ZG1 Z3/Z4 RENEWAL Service Manual
 
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AIWA 4ZG1 Z3/Z4 RENEWAL
Service Manual


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

Description of AIWA 4ZG1 Z3/Z4 RENEWAL 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 17 (click to view)
Note:

Connect a probe (10: 1) of the oscilloscope test point for adjustment. Connect ground ( ) terminal of oscilloscope probe to TP3 (VREF) for all adjustment.

2. Tracking Balance Check

Oscilloscope (DC range)

1. Focus Bias Adjustment Make the focus bias adjustment when replacing and repairing the optical block.
Oscilloscope (DC range)

TP1 (TE) TP3 (VREF)

+ –

TP2 (RF) TP3 (VREF)

+ –

1) Connect an oscilloscope to test points TP1 (TE) and TP3 (VREF). 2) Start up the CD test mode. 3) Insert the test disc TCD-782 (YEDS-18) and enter the traverse mode of the CD test mode. 4) Confirm that the traverse waveform on an oscilloscope is vertically symmetrical as shown in the figure below. 5) After confirming the waveform, release the CD test mode.

1) Connect an oscilloscope to test points TP2 (RF) and TP3 (VREF). 2) Turn on the power switch. 3) Insert test disc TCD-782 (YEDS-18) and play back the second program. 4) Adjust SFR101 so that RF signal of the test point TP2 (RF) is MAX and CLEARREST.

A VREF B A=B

MAX 1.4 ± 0.1 Vp-p 0V EYE PATTERN must be CLEAR and MAX

VOLT/DIV: 20mV TIME/DIV: 1mS

VOLT/DIV: 0.5V TIME/DIV: 0.5µS Note: The current of the laser signal can be checked with the voltages on both sides of R46 (voltage across 10Ω). The difference for the specified value shown on the label must be within ± 6.0mA.

KSS-213B 15165 SG442

44.2mA

Laser current Iop =

Voltage across R46 10Ω

20

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