AIWA AVD55
Service Manual

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Contains Circuit Diagrams
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PDF Format
Complete manual
Language: English

Price: $4.99

Description of AIWA AVD55 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 22 (click to view)

ELECTRICAL ADJUSTMENT

TUNER C.B
FFE801

3

6

IC BLOCK DIAGRAM IC, BU4094BCF

TP6

4

L772 TP1 L981

L771

TP3 TP2 1/3 TP4

IC771 TP5

4
< TUNER SECTION >
1. Clock Frequency Check Settings: â�¢ Test point: TP2 (CLK IC771 pin30) Method: Set to AM 1710kHz and check that the test point becomes 2160kHzÂ±45Hz. 2. AM VT Check Settings: â�¢ Test point: TP1 (VT) Method: Set to AM 1710kHz and check that the test point is less than 8.5V. Then set to AM 530kHz and check that the test point is more than 0.6V. 3. AM IF Adjustment Settings: â�¢ Test point: TP5, TP6 L772 .............................................. 450kHz 4. AM Tracking Adjustment Settings: â�¢ Test point: TP5, TP6 â�¢ Adjustment location: L981 (1/3) Method: Set to AM 999kHz and adjust L981 so that the test point becomes maximum. 5. FM VT Check Settings: â�¢ Test point: TP1 (VT) Method: Set to FM 87.5MHz, 108.0MHz and check that the test point is more than 0.5V (87.5MHz) and less than 8.0V (108.0MHz). 6. DC Balance/Mono Distortion Adjustment Settings: â�¢ Test point: TP3, TP4 â�¢ Adjustment location: L771 â�¢ Input level: 60dB Method: Set to FM 98.0MHz and adjust L771 so that the voltage between TP3 and TP4 becomes 0VÂ±0.04V. Next, check that the distortion is less than 1.3%.

IC, M62431FP

PRACTICAL SERVICE FIGURE
< TUNER SECTION >
<FM SECTION> Signal to noise ratio: Distortion: (Input: 60dB) Stereo separation: Intermediate frequency: <AM SECTION> Sensitivity: (S/N 20dB) Signal to noise ratio: (Input: 74dB) Distortion: Intermediate frequency: More than 62dB (at 98.0MHz) Less than 2.0% (at 98.0MHz) More than 22dB (at 98.0MHz) 10.7MHz

Less than 60dB (at 600kHz) Less than 58dB (at 1000/1400kHz) More than 36dB (at 1000kHz) Less than 1.5% (at 1000kHz) 450kHz

IC, M62439SP

35

36

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