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Troubleshooting Guide - LG CRD-8161B Service Manual

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1. Initial Lead-in Operation
2. Trouble List (Circuit)
(In the Initial Lead-in Operation Mode)
A. LED doesn't light.
B. Pick-Up doesn't move to the inner-track.
C. Disc doesn't rotate.
D. The Laser (RED) of Pick-Up doesn't light.
E. Pick-Up lens doesn't move up and down.
F. TOC isn't read. (The state LED is not disappear.)
(In the Operation Mode)
G. Jump is unstable (Noises are occurred.)
H. During the Access, Pick-Up slides innermost track or outermost track.
I.
High speed operating (8~16 times) is performed, but normal speed (1 time: Audio CD) operating is
unstable.
J. During Audio CD Play, LED flickers, but Speaker is silent.
K. Trouble for compatibility.
26

TROUBLESHOOTING GUIDE

Reset or Power-On.
LED Flikers.
Pick-Up moves to the inner-Track.
Ratate disc.
Laser on the Pick-Up lights.
Focus Search (through moving up and down the lens of Pick-Up)
Focus Servo On (FOK(TP10) : H, FEO(TP14) signal generation)
Tracking Servo On (TEO(TP13) Signal generation)
Spindle Servo On (MDP(TP17) Signal generation)
Read TOC Area (LED Flikers)
Search the Start of Data Area (00:02:16) and then pause.

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