SECTION 4 TEST MODE
Outline
•In this set, overall adjustment mode is made available by enter- ing test mode to perform automatic adjustment of CD and MO. In the overall adjustment mode, the disc is determined whether it is CD or MO and adjustments are performed in sequence. If a fault is found, the location of the fault is displayed. Also, in servo mode, each adjustment can be automatically made.
Setting the Test Mode
To enter the test mode, two methods are available :
1.Entering method with key input.
Turn on the HOLD switch on the set. While holding down the p key on the set, press the following remote commander keys in
the following order :
+n +n =n =n +n =n +n =n P n P
2.Entering method by shorting the test point
Solder bridge the test point TAP801 (TEST) on the main board (connect IC801 pin #ª to GND), and turn on the POWER.
[MAIN BOARD] (Conductor side)
Test mode
Short : Test mode
Open : Normal mode
Releasing the Test Mode
1.When test mode was entered with key input, turn off the POWER.
2.When test mode was entered by shorting the test point, turn off the POWER and open the solder bridge of TAP801 (TEST MODE) on the main board.
Operation of Setting on Test Mode
When the test mode is set, the LCD displays the following :
V 3 . 3 0 0
ROM version display
LCD on remote commander
•The cycle - the above ROM version display nAll lit nAll off
-is repeated.
(The ROM version is constantly displayed.)
•When the PLAY MODE key is pressed and hold down, the dis- play at that time is held so that display can be checked.
Configuration of Test Mode
The test mode has the configuration given below.
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test |
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Display setis | VOL |
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Displays of the LCD on the remote commander are shown in parentheses.
Servo Mode
•Set the test mode, press the VOLUME – key and use theÓkey to set the servo mode.
•When the servo mode is set, use the +key and the =key to move the optical
•When entering another mode, refer to the configuration of test
mode.
1. Structure of Servo Mode
Servo mode | Ó key |
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0 0 | 0 |
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12 3
(See page 8)
*1 Repeatedly press Ó key
to change the mode. (Refer to the following list for a description of each mode.)
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