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CD TEST MODE
1-1 Activating CD Test Mode
1) Remove the resistance (R907 100k�) of the 45 pin (TEST) for the IC901 (µPD178018AGC-597-3B9) on the main circuit board, and connect the 79 pin (VDD) and the 45 pin with a wire. REMOVE 100k� PIN63 PIN73
Add Wire
IC701
2) Supply DC +12V to the ACC (red) and BACKUP (yellow) of the power supply/speaker connector, and supply � to the Ground (black) wire. When the CD test mode is activated, all the lights are lit on the display as shown in the diagram below.
EX: CDC-X217
1-2 Exiting CD Test Mode
1) Remove the wires of the 45 pin (TEST) and the 79 pin (VDD) for IC901 (µPD178018AGC-597-3B9) on the main circuit board, and connect the resistance (R907 100k�).
1-3 Function and Usage of CD Test Mode
Mode Start Mode Search Mode RANDOM (No 6) Button for Activation Display All lights are lit. TOC Reading Focus search continuous operation. PU lens repeats full-swings. (Note 1) Operation Contents Test mode starts. APC circuit check Laser current measurement Focus-error waveform check Focus servo Tracking servo CLV servo Sled servo Tracking servo OFF
Play Mode
REP 1 (No 5)
Track No. and play time display Level/Indicator display Track No. and play time display All lights are lit.
Normal playback. Search-mode function if TOC READ is not available.
Traverse Mode Sled Mode
INT (No 3)
Play pause status
Pickup moves to outermost track. Pickup moves to innermost track. Step 1: Used for CD/CD-R Step 2: Used for CD-R, RF Gain Up against Step 1 Step 3: Used for CD-R, Laser Power UP against Step 2
Sled servo Mechanism function check
Gain Switch
1 (Preset button)
All lights are lit.
Steps 1 to 3 are cyclic. If Disc is not compatible, �ERROR 03� appears on the display.
� During search-mode check, do not insert a disc. To exit the search mode, press the PWR button. When the PWR button is pressed again, the Test Mode restarts. � Be sure to insert a test disc when the search mode is not activated. Note 1: When focus search operates continuously more than 10 minutes, the protection circuit may start due to generation of heat in the driver IC. If this happens, turn off the power, leave the unit for a while, and then, restart.
� 30 �
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