Pioneer PDR-L77 Service Manual page 60

PDR-L77
Code Symptom
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
d
"CHECK DISC."
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
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.
60
Contents of Error
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
Possible Cause
• 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
Checkpoints
IC201 (PA9007A)
IC101 (AK8563)
IC363 (TC7S04F)
IC364 (TC7S14F)
IC451 (M56788FP)
IC401 (CXD2585Q)