Clarion DRX9255EXL, Service Manual

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Oscilloscope
SSG
Digital volt meter
■ CAUTIONS
Use of controls,adjustments,or performance of procedures other than those specified herein,may result in hazardous radiation
exposure.
The compact disc player should not be adjusted or repaired by anyone except properly qualified service personnel.
■ TROUBLESHOOTING
Symptom Case Measure
Nothing happens when buttons are pressed.
Display is not accurate.
Microprocessor has malfunctioned
due to noise, etc.
Press the reset button for
about 2 secounds with a thin
rod.
RESET BUTTON
■ ERROR DISPLAYS
If an error occurs, the type of error is displayed. Take the measures described below to eliminate the problem.
Error display Cause Measure
Err 1
Err 2
Err 3
Err 6
Displayed when the battery of the CD
changer has run down.
Replace the battery of the CD changer with a new
one.
Displayed when the CD is stuck and cannot be
ejected.
Mechanism of CD changer or the source unit could
be damaged.
Displayed when the CD is scratched, etc. and can-
not be played.
Replaced the CD in the source unit or the CD
changer with an unscratched and unwarped one.
Displyed when the CD is inserted upsidedown into
the CD changer and cannot be played.
Reload the CD properly.
■
ADJUSTMENTS
FM noise
convergence 1. Input the 98.1MHz/55dB μ (400Hz,30% MOD) SSG signal.
2. Set the output to 0dBm(0.245V) by main volume.
3. Adjust VR3 so that the output level is
− 15dB when the SG output is set − 20dB μ .
Item Procedure
Measuring
instrument
FM SD 1. Input the 98.1MHz/25dB μ (400Hz,30% MOD) SSG signal.
2. Adjust VR4 so that the output of TP1 is just high level.
Oscilloscope
SSG
AM SD 1. Input the 1000kHz/35dB μ (400Hz,30% MOD) SSG signal.
2. Adjust VR2 so that the output of TP2 is just high level.
Oscilloscope
SSG
Diver 1. To release the test mode, turn on the power switch.
2. Input the 98.1MHz/20dB
μ (400Hz,30% MOD) SSG signal.
3. Adjust VR1 so that the output of TP3 is 1.0V(DC).
Oscilloscope
SSG
Digital volt meter