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CASIO JD-4000BK
Service Manual


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

Description of CASIO JD-4000BK 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 21 (click to view)
10. TROUBLESHOOTING
1. Intermittent display
START Y Is the Heat seal defective ? N Y Is the battery contact weak ? N Are there short circuit around the pins Y of the LSI (HC3009-01-F1) ? N Is the soldering weak ? Y N Replace the PCB ass'y Replace Clean and adjust pressure of contact Resolder Resolder

2. Erratic display
START Is the Heat seal defective ? N Is the LCD defective ? Y Y Replace Replace Check or replace the chip capacitors C4 ~ C8 Resolder

N N Are the voltage V0 ~ V4 OK ? Y Are there short circuit around the pins of the LSI (HC3009-01-F1) or between the 2 pins of Y the crystal oscillator (·1) ? N Are there short circuit around the pins of the RAM and ROM ? N Replace the PCB ass'y

Y

Resolder

� 20 �

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