SONY CMTCPX22
Service Manual

HCD-CPX22/NXM3

[GC � � � �

Test Mode] All fluorecent segments and LEDs are tested. Microprocessor virsion. Keyboard check. Display check.

[MC Test Mode] (Tape section) � This mode is used to test the functions of the Tape Procedure. Procedure: 1. Press ?/1 button to turn the set ON. 2. To enter the test mode, press the three buttons x , X and z/START simultaneously. 3. While holding the [DIMMER] button depressed, turn the ALC ON. 4. Press the z/START button to start REC (recording). 5. While recording, press the [TUNING +] button to perform automatic rewind and automatic playback (for FF version). Also, press the [TUNING -] button to perform automatic rewind and automatic playback (for FR version). 6. Select the function �TAPE A� or �TAPE B� 7. Press the [CD-SYNC] button while �TAPE A� or �TAPE B� is selected, to perform AMS check. �EDG[ ]� is displayed. A number appears inside[ ]. 8. To exit from this mode, press ?/1 button to turn the set OFF. [CD Ship Mode (LOCK) ] � This mode moves the pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair. Procedure: Press ?/1 button to turn the set ON. Select the function �CD�. Press x button and [CD] button simultaneously. The �STANDBY� display blinks instantaneously, and the CD ship mode is set. 5. To fluorescent indicator tube displays ��LOCK��. [CD Ship (LOCK) & COLD RESET MODE] Procedure: 1. Press ?/1 button to turn the set ON. 2. Select the function �CD�. 3. Press three buttons x , X and VIDEO (MD) simultaneously. 4. The �STANDBY� display blinks instantaneously and CD ship mode is set. 5. To fluorescent indicator tube displays �LOCK� and the set is reset. [CD power -manage function] Procedure: 1. Press ?/1 button to the set ON 2. Select the function �CD�. 3. Press ?/1 button to turn the set OFF. 4. Press x and ?/1 buttons simultaneously ,and the display of fluorescent indicator tube changes �CD POWER OFF� or �CD POWER ON�. 5. Press ?/1 button to turn the set OFF. 1. 2. 3. 4.

Procedure: 1. To enter the test mode, press the three buttons x , X and [TUNER/BAND] simultaneously. 2. All segments and LEDs (without STANDBY LED) are turned on. 3. Press the [TUNING -] button to increment the microprocessor software version. 4. Press the [TUNING +] button to change the indication for the microprocessor software version. 3. Press the b B button to set the check mode for the entries (KEY, JOG, etc.). 4. Press the X button to display the current VACS level. 7. Press the x button to enter the mode to check the display. If you press this button repeatedly, the display will change sequentially as the button is pressed. 8. Press the x , X and [TUNER/BAND] buttons simultaneously to set the standby mode. [CD Service Mode] � This mode can run the CD sled motor freely. Use this mode, for instance, when cleaning the pick-up. Procedure: 1. Press ?/1 button to turn the set ON. 2. Select the function �CD�. 3. To enter the test mode, press three buttons x , X , and [DISC 1] simultaneously. 4. The CD service mode is selected.The message ��CD SERVICE MODE�� is displayed. 5. While holding the [TUNING -] button depressed , to move the sled to the inside. �SLED IN� is displayed. While holding the [TUNING +] button depressed, to move the sled to the outside. �SLED OUT� is displayed. 6. Press the [CD SYNC] button so that �LD ON� and �LD OFF� are displayed to switch between Laser ON/OFF. 7. To exit from this mode, perform as follows: 1) Move the pick-up to the most inside track. 2) Press ?/1 button to turn the set OFF.
Note: � Always move the pick-up to most inside track when exiting from this mode. Otherwise, a disc will not be unloaded. � Do not run the sled motor excessively, otherwise the gear can be chipped.

[MC Test Mode] (Amplifier SECTION) � This mode is used to test the function of the amplifier section. Procedure: 1. Press ?/1 button to turn the set ON. 2. To enter the test mode, press the three buttons x , X and 3. 4. 5. z/START simultaneously. Turn [VOLUME] knob to counter-clockwise, the function of the equalizer is set to �MIN�. Turn [VOLUME] knob to clockwise, the function of the equalizer is set to �MAX�. Whenever turn [BASS] knob to clockwise, the display switches as follows. �TONE MAX� t�TONE MIN� t�TONE FLAT� To exit from this mode, press ?/1 button to turn the set OFF.

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