CD Test Mode

1-1 How to Activate CD Test Mode

1)Connect 62 pin (test) of IC701 (LC72358N-9910) on MAIN C.B to the 31 pin (VDD) by cable.

2)Connect wire of ACC (red) and BACKUP (yellow) of power supply/speaker connector to DC+12V, then connect Ground (black) to -.

When CD test mode is started, all displays will be lighted as shown in the following figure.

1-2 How to cancel CD Test Mode

1)Disconnect the cable of 62 pin (test) and 31 pin (VDD) of the MAIN C.B IC701 (LC72358N-9910) and switch on the power.

1-3 CD Test Mode Functions

MODE	Keys to operate	Display	Operations	Contents

Start Mode		All lightented		• Start TEST MODE

Search Mode	RANDOM	TOC	• Continual Focus Search	• Confirm APC circuit
		READING	(The pickup lens respeats the	• Laser current measurement
			full-swing up-down motion)	• Confirm focus error waveform
			* NOTE 1

Play Mode	REP 1	TRACK No.	• Normal Play Back	• Focus servo
		Playing Time Indica-	• Focus search is contiuned if	• Traking servo
		tion Revel/Ing	TOC cannot be read	• CLV servo
		Indication		• Sled servo
Traverse	INT	Track no. & Playing	• Pause Status	• Traking servo OFF
Mode		Time Indication

Thread Mode		All lightened	• Pick up Move to outer most track	• Thread servo
			• Pick up Move to inner most track	• Confirm mechanism operation

Gain Switch	1	All lightened	• Step 1 : For CD/CD-R	• Step 1 to 3 are cyclic
	(Preset Button)		• Step 2 : For CD-R RF Gain is up	• “Error 03” is indicated if the Disc
			against Step 1	does not Step 1 match.
			• Step 3 : For CD-R Laser Power Up
			against Step 2

•Do not insert a Disc when confirming Search Mode

•Press PWR button when cancelling Search Mode. Test Mode will be restored when PWR button is pressed once again.

•Insert the “Test Disc” when operating all modes except search mode.

*NOTE 1 : There are CD operations are disable owing to the protection circuit being operated when heat builds up in the driver IC if the focus search is operated continually for more than 10 minutes. In cases, the power supply should be switched off for 10 minutes until heat has been reduced and then re-started.

Caution when servicing

(1)How to use extension jig.

Correct between MAIN C.B. and CD mechanisms by extension jigs when checking CD mechanism (TN-CCD1001-113J) operation.

(Refer to the following figure.)

Parts Description	AKC-JIG	Parts Number	SV-J00-075-010

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CD TEST MODE

MODE

READING

REP 1

INT