General Information; Diagnosis; Error Code - Pioneer PDR-W839 Service Manual

7. GENERAL INFORMATION

7.1 DIAGNOSIS

7.1.1 ERROR CODE (CD-R)
Error Code Display for Service
The PDR-W839 can display the error codes for service.
When the DISPLAY key of the CD-R side and ERASE key is
held down simultaneously, an FL display as shown below is
Display
999999
Error code table for service
Code Symptom
The unit stops during the
L∗ tray open/close operation.
(CHECK display)
The unit stops when PLAY
E∗ or REC/PAUSE starts.
(CHECK display)
The unit does not read the
P∗ inserted disc, and stops.
(CHECK DISC display)
The unit stops before it
C∗
enters REC/PAUSE mode.
The unit stops during
F∗
playback or recording.
The unit stops in a
A∗ recording-related operation,
displaying "CHECK DISC."
The unit stops in a recording
related operation, displaying
"CHECK DISC."
d∗
The unit does not read the
inserted disc, and stops.
The indication for * shows themechanism mode listed below.
No. Mechanism Mode
0 PLAY
1 OPEN
2 STOP
−
3
−
4
∗∗
Error code Number(2 digits)
Contents of Error
Improper loading
Defective slider
• The pickup cannot be returned to the
specified position.
Defect in spindle
• Disc upside-down.
• Dirty or cracked disc
• Abnormal disc rotation
• No signal obtained from the disc
Defects related to the recording laser
power
• Dirty or cracked disc
• The optimum recording power
cannot be obtained.
• Trouble in RF detection.
Defective pickup
• Unable to focus because of dirt or
crack on the inserted disc.
• Unable to output the proper laser
power
• Unable to focus
Stop during recording
• The unit stops, being obstructed by a
dirt or a crack on the disc.
No. Mechanism Mode
5 SETUP
6 TOC READ
−
7
8 SEARCH
9 REC/PAUSE
Right 2 FL digits : Error code for service
The error code for service is displayed as a number (ERROR
NUMBER), which follows a message "CHECK DISC" or
"CHECK." For details, see the table below.
Possible Cause
• Defective tray position sensor
• Defective loading motor
• Improper soldering
• Pattern short
• Improper power supply
• Disconnected flexible cable
• Defective drive circuit
• Abnormal power supply
• Abnormal TOC position switch
• Improper soldering
• Defective spindle motor
• Defective spindle drive circuit
• Abnormal FG signals
• Defective WBL circuit
• Defective decoder circuit
• Unable to read ATIP or subcode
• High error rate
• Defective laser diode
• Trouble in RF detection
• Defective RFT RFB circuit
• Recording power is not sufficient.
• Improper soldering, pattern short
• Trouble with power supply
• Unable to read ATIP or subcode
• Defective laser diode
• Defective focus drive circuits
• Defective pickup
• Improper soldering
• Pattern short
• Trouble of power supply
If any hardware trouble occurs before
displaying A∗ or d∗, the unit stops
displaying a code other than these
codes. Therefore, these service
codes are generated only for troubles
with the disc.
No. Mechanism Mode
A REC
B TOC REC
C OPC
D TOC CHECK
E PMA, ACTUAL PAUSE REC
PDR-W839
Checkpoints
IC451 (BA5810FP)
S601 (PSG1014)
IC451 (BA5810FP)
IC401 (CXD2585Q)
PC651
(NJL5809K-F1)
IC451 (BA5810FP)
IC401 (CXD2585Q)
IC201 (PA9007A)
IC101 (AK8567)
IC308 (TC7S14F)
IC451 (BA5810FP)
IC401 (CXD2585Q)
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