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CASIO QW1522
Service Manual


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

Description of CASIO QW1522 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 9 (click to view)
PRECAUTIONS FOR REPAIR: MODULE QW-1522/1523 [ AC (ALL CLEAR) AND REMOVING OF MODULE ]
1. Perform AC (ALL CLEAR) when inserting a new battery, or else the memories and/ or counters may give erratic displays. Touch the AC contact and the positive (+) side of the battery or main plate with the metallic tweezers. The contact should be made for about two seconds. 2. On removing of the module from the case, please insert the precision screw driver between the module and the case pointed by arrows.

Metallic tweezers

[ ACCURACY CHECKING ]
Check the frequency of the quartz oscillator (32,768 Hz) with the sensor B of the quartz timer, or switch the module to âACCURACY CHECKING MODEâ. Then check the frequency of LCD drive waveforms (32Hz) with the sensor A of a quartz timer. The operations are shown below: A) SWITCHING TO âACCURACY CHECKING MODEâ Continuously push the A , C and D buttons and at the same time. Then all the segments are displayed and the LCD drive signals are changed to the static drive signal of â32 Hzâ so that you can check the accuracy with the sensor A of the quartz timer. B) CANCELLATION OF THE âACCURACY CHECKING MODEâ A Push any button. Then the display is returned to its original state. NOTE: The âACCURACY CHECKING MODEâ will automatically return to the regular mode in 1 ~ 2 hour(s) without any operation.
â8â

B

C

SPL

SIG

ALM

D

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