SONY HCDVX33
Service Manual

SECTION 4 TEST MODE
[MC Cold Reset] � The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to the customer. Procedure: 1. Press three buttons x , ENTER , and ?/1 simultaneously. 2. The fluorescent indicator tube displays �COLD RESET� and the set is reset. [CD Ship Mode] � This mode moves the pickup to the position durable to vibration. Use this mode when returning the set to the customer after repair. Procedure: 1. Press ?/1 button to turn the set ON. 2. Press three buttons x , ENTER , and SPECTRUM simultaneously. 3. After the "STANDBY" display blinks six times, a message �LOCK� is displayed on the fluorescent indicator tube, and the CD ship mode is set. [MC Hot Reset] � This mode resets the set with the preset data kept stored in the memory. The hot reset mode functions same as if the power cord is plugged in and out. Procedure: 1. Press three buttons x , ENTER , and DISPLAY simultaneously. 2. The fluorescent indicator tube becomes blank instantaneously, and the set is reset. [CD Service Mode] � This mode can run the CD sled motor freely. Use this mode, for instance, when cleaning the pickup. Procedure: 1. Press ?/1 button to turn the set ON. 2. Select the function �CD�. 3. Press three buttons x , ENTER , and Z OPEN/CLOSE simultaneously. 4. The CD service mode is selected. 5. With the CD in stop status, turn the shuttle knob clockwise to move the pickup to outside track, or turn the shuttle knob counter-clockwise to inside track. 6. To exit from this mode, perform as follows: 1) Move the pickup to the most inside track. 2) Press three buttons in the same manner as step 2.
Note: � Always move the pickup 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.

[Change-over of AM Tuner Step between 9 kHz and 10 kHz] � A step of MW channels can be changed over between 9 kHz and 10 kHz. Procedure: 1. Press ?/1 button to turn the set ON. 2. Select the function �TUNER�, and press TUNER/BAND button to select the BAND �AM�. 3. Press ?/1 button to turn the set OFF. 4. Press ENTER and ?/1 buttons simultaneously, and the display of fluorescent indicator tube changes to �AM 9 k STEP� or �AM 10 k STEP�, and thus the channel step is changed over. [GC Test Mode] � This mode is used to check the software version, FL tube, LED, keyboard and VACS. Procedure: 1. Press three buttons x , ENTER , and DISC 2 simultaneously. 2. LEDs and fluorescent indicator tube are all turned on. 3. When you want to enter the software version display mode, press DISC 1 . The model number and destination are displayed. 4. Each time DISC 1 is pressed, the display changes starting from MC version, GC version, VC version, CD version, CM version, ST version, TC version, TA version, TM version and BR version in this order, and returns to the model number and destination display. 5. When DISC 3 is pressed while the version numbers are being displayed except model number and destination, year, month and day of the software creation appear. When DISC 3 is pressed again, the display returns to the software version display. When DISC 1 is pressed while year, month and day of the software creation are being displayed, the year, month and day of creation of the software versions are displayed in the same order of version display. 6. Press DISC 2 button, and the key check mode is activated. 7. In the key check mode, the fluorescent indicator tube displays �KEY0 VOL0�. Each time a button is pressed, �KEY� value increases. However, once a button is pressed, it is no longer taken into account. �VOL� value increases like 1, 2, 3 ... if rotating VOLUME knob in �+� direction, or it decreases like 0, 9, 8 ... if rotating in ��� direction. 8. Also when DISC 3 is pressed after lighting of all LEDs and FL tubes, value of VACS appears. 9. To exit from this mode, press three buttons in the same manner as step 1, or disconnect the power cord.

[VACS ON/OFF Mode] � This mode is used to switch ON and OFF the VACS (Variable Attenuation Control System). Procedure: Press the ENTER and SPECTRUM buttons simultaneously. The message �VACS OFF� or �VACS ON� appears.

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