SONY HCDDX20
Manual de Servicio

HCD-DX20/RG30

[MC Test Mode] � This mode is used to check operations of the respective sections of Amplifier, TUNER, CD and Tape. Procedure: 1. Press the ?/1 button to turn on the set. 2. Press the three buttons of x , ENTER and DISC 3 simultaneously. 3. A message �TEST MODE� appears on the FL display tube. � The messages VACS1 to VACS5 are displayed when the VACS is changed in this mode. � The number of repeats of TAPE and CD is set to the infinite number as the default setting. 4 When v (CURSOR UP) button is pressed, GEQ increases to its maximum and a message �GEQ MAX� appears. 5. When V (CURSOR DOWN) button is pressed, GEQ decreases to its minimum and a message �GEQ MIN� appears. 6. When b (CURSOR LEFT) or B (CURSOR RIGHT) button is pressed, GEQ is set to flat and a message �GEQ FLAT� appears. 7. In the test mode, the default-preset channel is called even when the TUNER is selected and an attempt is made to call the preset channel that has been stored in memory, by operating the Shuttle knob. (It means that the memory is cleared.) 8. When a tape is inserted in the Deck B and the TAPE B function is selected, and when the REC PAUSE/START button is pressed twice, recording starts. The VIDEO function is selected automatically as the input source. 9. Select the desired loop by pressing the PLAY MODE button in the TAPE B function. Insert a test tape AMS-110A or AMSRO to Deck A. 10. Press the SPECTRUM button to enter the AMS test mode. 11. After a tape is rewound first, the FF AMS is checked, and the mechanism is shut off after detecting the AMS signal twice. 12. Then the REW AMS is checked and the mechanism is shut off after detecting the AMS signal twice. 13. When the check is complete, a message of either OK or NG appears. 14. When the two buttons of SPECTRUM and DISC1 are pressed at the same time in any function modes, either the �VACS ON� display to enable the VACS function or the �VACS OFF� display to disable the VACS function can be selected. 15. When you want to exit this mode, press the ?/1 button twice. The cold reset is enforced at the same time.

[Microprocessor version display] � If the following operation is performed during the POWER OFF in the modes other than the POWER SAVE mode (i.e., while the Demo display shows the watch time), 1. When three buttons of STOP , ENTER , V (CUSOR DOWN) are pressed at the same time, the MC and the GC microprocessor version numbers are displayed as �M1.00 G1.00�. 2. When three buttons of STOP , ENTER , v (CUSOR UP) are pressed at the same time, the model name and destination are displayed as �BG1 AS1A3�.

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