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MZ-NF520D SECTION 4 TEST MODE
Outline
� This set provides the Overall adjustment mode that allows CD and MO discs to be automatically adjusted when in the test mode. In this overall adjustment mode, the disc is discriminated between CD and MO, and each adjustment is automatically executed in order. If a fault is found, the system displays its location. Also, the manual mode allows each individual adjustment to be automatically adjusted. � Operation in the test mode is performed with the set.
Operation in Setting the Test Mode
� When the test mode becomes active, first the display check mode is selected. � Other mode can be selected from the display check mode. � When the test mode is set, the LCD repeats the following display.
Set LCD display
Setting Method of Test Mode
There are two different methods to set the test mode: 1 Short SL803 (TEST) on the MAIN board with a solder bridge (connect pin <zx. of IC801 to the ground). Then, turn on the power. � MAIN Board (Side B) �
All off All lit
PGM
888 SOUND 1 2 GP
Microcomputer version display
009 V1.600
� When the ENTER/NX key is pressed and hold down, the display at that time is held so that display can be checked.
Releasing the Test Mode
For test mode set with the method 1: Turn off the power and open the solder bridge on SL803 (TEST) on the MAIN board.
Note: Remove the solders completely. Remaining could be shorted with the chassis, etc.
For test mode set with the method 2: Turn off the power.
SL803 (TEST)
2 In the normal mode, turn on the [HOLD] switch. While pressing the ENTER/NX key press the following order:
[VOLUME +]t[VOLUME +]t[VOLUME --]t[VOLUME --] t[VOLUME +]t[VOLUME --]t[VOLUME +]t [VOLUME --]t[GROUP]t[GROUP]
Note: If electrical adjustment (CD and MO overall adjustment) has not been finished completely, �ERROR� is displayed on LCD of the set.
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