SONY MZE25
Manual de Servicio

SECTION 3 TEST MODE
General � In the TEST mode, this set provides the Auto mode in which both CD and MO are adjusted automatically. In the Auto mode, whether a disc is CD or MO is discriminated, then each adjsutment is automatically executed sequentially. If a fault is found, it is displayed. Also, in the Servo mode, each item can be adjusted automatically. Entering TEST Mode To enter the TEST mode, the following two methods are available: Method-1. Entry by key input Turn on the HOLD switch on the main set, and while pressing p key on the main set, press the following keys on the remote controller in this order. + �+ �= �= �+ �= �+ �= � P�P Method-2. Entry by shorting the test point Bridge the TAP801 (TEST) with a solder (connect IC801 #� to GND) on the MAIN board, turn on the POWER switch, and press ( key. Releasing TEST Mode 1. Turn off the POWER switch. 2. Remove the solder bridge form TAP801 (TEST) on the MAIN board. (This is required only when using Method-2.) Operation in TEST Mode In the TEST mode, the Remote controller LCD display is as shown below: Configuration of TEST Mode The TEST mode configuration of this set is as follows:
+key
pkey

AUTO Mode (key Auto?
pkey

Start?

pkey

Display in TEST Mode

�key
pkey

MANUAL Mode Manu?

(key

SERVO Mode

000
+,�key AUDIO Mode

100
+,�key POWER Mode

300
SERVO Mode � Enter the TEST mode, press VOL � key and ( key to select the SERVO mode. � When the second digit of mode number is not 0 and the first digit is 0 (010, 020, 030, etc.), the optical pickup moves to outside track or inside track with + key or = key respectively. � To select other modes, refer to the TEST mode configuration. 1. Configuration of SERVO Mode
+,�key

300

V3.000

Remote controller LCD

ROM version display

SERVO Mode

000

(key

� ROM version display � All ON � All OFF are repeated. � To hold the display for confirmation, press the PLAY MODE key.

pkey

OFFSET Adj.

(key

010
Each time (key is pressed, 011-013 modes pkey are switched. (For each mode, see relevant table)
(key

pkey

LASER POWER Adj.

(key

020
Each time (key is pressed, 021-024 modes pkey are switched. (For each mode, see relevant table)
(key pkey

MO Adj.

(key

030
Each time (key is pressed, 031-039 modes pkey are switched. (For each mode, see relevant table)
(key

1

2
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3

�9�

+,�key