AIWA CADW935
Service Manual

TEST MODE
The CA-DW935M has two types of test mode: conventional CD test mode and new mechanism test mode. 1) Starting CD test mode � Hold down the CD function key, and then plug the power cord into AC outlet: The CD test mode will start and "CD TES7" will appear. � Each time the CD function key is pressed thereafter, the CD test mode and mechanism test mode will alternate. "CD TES7" appears in CD test mode. "MC TES7" appears in mechanism test mode. 2) Functions in CD test mode Mode Start Search Operation Display to start test mode CD TES7 CD ---Action � Continuous focus search. PU lens repeats full swing. (Note 1) Play Track no. and play time Normal play. Same operation as in search mode when TOC read is impossible. Traverse Track no. and play time Playback pause status Content � APC circuit check Laser current measurement Focus error waveform check Focus servo Tracking servo CLV servo Sled servo Tracking servo OFF

Sled

CD TES7

Pickup moves to inner edge. Pickup moves to outer circumference.

Sled servo Mechanism operation check

Note 1: If focus search continues for 10 minutes or more, the driver IC could generate heat and the protection circuit could operate, resulting in no operation of CD player. In this case, turn power off, radiate heat for approx. 10 minutes, and then restart the CD player.

3) Mechanism test mode � The following items can be checked in the mechanism test mode: 1. Checking mechanism operation The elevator up/down and frame/tray open/close operations can be checked. Operation to be checked Elevator going up Elevator going down Frame opening Frame closing Tray opening Tray closing CD1 OPEN/CLOSE button CD2 OPEN/CLOSE button CD1 OPEN/CLOSE button CD2 OPEN/CLOSE button Operation button Display E UP E DO F OP F CL T OP T CL

Note: When the elevator is at the top position, the frame will open or close, and when it is at positions other than top, the tray will open or close.

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