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AIWA CADW540
Service Manual


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

Description of AIWA CADW540 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 24 (click to view)
ELECTRICAL ADJUSTEMENT-1/1 PRACTICAL SERVICE FIGURE
L003 BAR ANT 3 1. AM IF Adjustment L007 .................................................................................... 530 kHz 2. AM VT Adjustment Settings: • Test point: C39 + (TP1) • Adjustment location: L004 Method: Set to AM 1710 kHz adjust L004 so that the test point becomes 5.6 V ± 50 mV L005 3. AM Tracking Adjustment L003 .................................................................................... 600 kHz TC001 ............................................................................... 1400 kHz 4. FM VT Adjustment TC001 24 2 3 Settings: • Test point: C39 + (TP1) • Adjustment location: L006 Method: Set to FM 108 MHz adjust L006 so that the test point becomes 5.6 V ± 50 mV 5. FM Tracking Adjustment L005 ..................................................................................... 98 MHz Distortion: (Input 88 dB) Intermediate frequency:

< TUNER SECTION > < FM SECTION >
Sensitivity: (THD 3%) Signal to Noise Ratio: (Input 32 dB) Distortion: (Input 32 dB) Intermediate frequency: Stereo separation: Less than 22 dB (87.5 MHz) Less than 22 dB (98.0 MHz) Less than 22 dB (108.0MHz) More than 55 dB (at 98.0 MHz) Less than 3.0% (at 98.0 MHz) 10.7 MHz ±0.3 MHz More than 18 dB (at 1 kHz)

FRONT C.B

MAIN C.B
L007 1 IC001

5 9

SFR430

C39 4

L006 L004

< AM SECTION >
Sensitivity: (S/N 10 dB) Less than 52 dB (at 600 kHz) Less than 50 dB (at 1000 kHz) Less than 50 dB (at 1400 kHz) Less than 3% 530 kHz ± 5 kHz

< CASSETTE SECTION > < TAPE SECTION >
6. Bias frequency Adjustment L330 ......................................................................... 56 kHz ± 2 kHz 7. Tape speed Adjustment Settings: • Test tape: MT111 • Test point: PHONES JACK (J251) • Adjustment location: SFR761 L330 6 Method: Play back the test tape and adjust so that the output frequency is 3000 Hz ±30 Hz. Tape speed: Wow & flutter: Take-up torque: FF torque: Rew torque: Back tension: S/N ratio: Distortion: Noise (PB): 3000 Hz ± 60 Hz Less than 0.35% (JIS RMS) 30-60 g-cm (DECK 1/2) 55-140 g-cm (DECK 1/2) 55-140 g-cm (DECK 1/2) 1-5 g-cm More than 50 dB (DC) Less than 3.0% (PB) Less than 0.9 mV (DC) Less than 15 mV (AC VOL max)

J251 SFR761 78 7

8. Azimuth Adjustment Settings: • Test tape: TTA-320 • Test point: PHONES JACK (J251) • Adjustment location: Azimuth adjustment screw Method: Play back the 8kHz signal of the test tape and adjust screw so that the output becomes maximum.

< CD SECTION >
9. Focus Bias Adjustment Settings: • Test CD: TCD-782 (A-BEX) • Test point: IC401 PIN20, PIN58 • Adjustment location: SFR430 Method: Play back the #15 of the test CD and adjust SFR430 so that the voltage between pin20 and pin 58 of IC401 becomes 0V ± 0.1 mV.

RPH/PH

8

-24-

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