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Service Manual

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

Description of SHARP CDBA250 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.

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Text excerpt from page 6 (click to view)

Troubleshooting Chart
Many potential "problems" can be resolved by the owner without calling a service technician. If something is wrong with this product, check the following before calling your authorized SHARP dealer or service center.

Cassette deck
Symptom Cannot record. Possible cause Is the erase-protection tab removed? Is it a normal tape? (You cannot record on a metal or CrO tape.) Is there any slack? Is the tape stretched? Cannot hear treble. Sound fluctuation. Cannot remove the tape. If a power failure occurs during playback, the heads remain engaged with the tape. Do not open the compartment forcibly. Wait until electricity resumes. Are the capstans, pinch rollers, or heads dirty?

Symptom The clock is not on time. When a button is pressed, the unit does not respond. Possible cause Did a power failure occur? Reset the clock. Set this unit to the power stand-by mode and then turn it back on. If the unit still malfunctions, reset it. (Refer to step 3 under "If trouble occurs") No sound is heard. Is the volume level set to "0"? Are the headphones connected? Are the speaker wires disconnected?

Cannot record tracks with proper sound quality. Cannot erase completely. Sound skipping.

CD player
Symptom Playback does not start. Playback stops in the middle or is not performed properly. Playback sounds are skipped, or stopped in the middle of a track. Possible cause Is the disc loaded upside-down? Does the disc satisfy the standards? Is the disc distorted or scratched? Is the unit located near excessive vibrations? Is the disc very dirty? Has condensation formed inside the unit?

Remote control
Symptom The remote control does not operate. Possible cause Is the AC power cord of the unit plugged in? Is the battery polarity respected? Are the batteries dead? Is the distance or angle incorrect? Does the remote control sensor receive strong light?

Symptom Radio makes unusual noise consecutively. Possible cause Is the unit placed near the TV or computer? Is the FM/AM loop antenna placed properly? Move the AC power cord away from the antenna if located near.

Sudden temperature changes, storage or operation in an extremely humid environment may cause condensation inside the cabinet (CD pickup, tape heads, etc.) or on the transmitter on the remote control. Condensation can cause the unit to malfunction. If this happens, leave the power on with no disc (or cassette) in the unit until normal playback is possible (about 1 hour). Wipe off any condensation on the transmitter with a soft cloth before operating the unit.

Troubleshooting Chart
If trouble occurs
When this product is subjected to strong external interference (mechanical shock, excessive static electricity, abnormal supply voltage due to lightning, etc.) or if it is operated incorrectly, it may malfunction. If such a problem occurs, do the following: 1 Set the unit to the stand-by mode and turn the power on again. 2 If the unit is not restored in step 1, unplug and plug in the unit, and then turn the power on. 3 If neither step 1 nor 2 restores the unit, do the following: Press the ON/STAND-BY button to enter the power stand-by mode. While pressing down the / button and the X-BASS/DEMO button, press the ON/STAND-BY button until "CLEAR AL" appears.

Remote Control
Test of the remote control
Face the remote control directly to the remote sensor on the unit. The remote control can be used within the range shown below:
Press the ON/STAND-BY button. Does the power turn on? Now, you can enjoy the music.

Remote sensor

This operation will erase all data stored in memory including clock, timer settings, tuner preset, and CD program.

8" - 20' (0.2 m - 6 m)

Before transporting the unit
1 2 3 4 5 Press the ON/STAND-BY button to turn the power on. Press the CD button. Press the OPEN/CLOSE button to open the disc tray. Remove all CDs inserted in the unit. Press the OPEN/CLOSE button to close the disc tray. Make sure that "NO DISC" is displayed. Press the ON/STAND-BY button to enter the stand-by mode, and then unplug the AC power cord from the AC outlet.


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