Pioneer PDR-L77, Service Manual

Page: 60 / 73

60
PDR-L77
Code Symptom Contents of Error Possible Cause Checkpoints
C
∗
The unit stops before it
enters REC/PAUSE mode.
Defects related to the recording laser
power
• Dirty or cracked disc
• The optimum recording power
cannot be obtained.
• Trouble in RF detection.
• 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
IC201 (PA9007A)
IC101 (AK8563)
IC363 (TC7S04F)
IC364 (TC7S14F)
F
∗
The unit stops during
playback or recording.
Defective pickup
• Unable to focus because of dirt or
crack on the inserted disc.
• Unable to output the proper laser
power
• Defective laser diode
• Defective focus drive circuits
• Defective pickup
• Improper soldering
• Pattern short
• Trouble of power supply
IC451 (M56788FP)
IC401 (CXD2585Q)
A
∗
The unit stops in a
recording-related operation,
displaying "CHECK DISC."
• Unable to focus
Stop during recording
• The unit stops, being obstructed by a
dirt or a crack on the disc.
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.
d
∗
The unit stops in a recording
related operation, displaying
"CHECK DISC."
The unit does not read the
inserted disc, and stops.
No. Mechanism Mode No. Mechanism Mode No. Mechanism Mode
0 PLAY 5 SETUP A REC
1 OPEN 6 TOC READ B TOC REC
2 STOP 7
−
C OPC
3
−
8 SEARCH D TOC CHECK
4
−
9 REC/PAUSE E PMA, ACTUAL PAUSE REC
The indication for * shows themechanism mode listed below.
To initialize the total turn-on time of the laser diode, hold the TIME button down for about 5 seconds in stop state with the INPUT selector
set to analog in Test mode.
The message "CLEAR" is displayed, and the total time is cleared.