SECTION 4 TEST MODE
[Outline]
•This set provides the Overall adjustment mode (Assy mode) that allows CD and MO disc to be automatically adjusted when in the test mode. In this overall adjustment mode, the protect switch is detected to judge the disc, CD or 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 indi- vidual adjustment to be automatically adjusted.
•The keys in the description refer to the keys on both set and remote commander unless otherwise specified. Though LCD display shows the LCD of the remote commander, same con- tents are also displayed on the LCD of the set.
[Setting Method of Test Mode]
There are two different methods to set the test mode:
1Short BP801 (TEST) on the MAIN board with a solder bridge (connect pin y; of IC801 to the ground). Then, turn on the
power.
– MAIN BOARD (Conductor Side) –
2In the normal mode, turn on the HOLD switch on the set. While pressing the N key on the set, press the following set keys in the following order:
>t > t . t . t > t . t
>t . t X t X
[Operation in Setting the Test Mode]
•When the test mode becomes active, first the display check mode is selected. (Press x key once, when the display check mode is not active.)
•Other mode can be selected from the display check mode.
•When the test mode is set, the LCD repeats the following dis- play.
LCD display
All lit | 888 xxxxxxxxx | F1SHUF |
|
| REC |
All off
Microprocessor | 001 V0.000 |
version | |
display |
|
•When the X 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 BP801 (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.
Note: If electrical adjustment (see page 18) has not been finished com- pletely, always start in the test mode. (The set cannot start in nor- mal mode.)
BP801
(Short: Test Mode )
Open: Normal Mode
– 11 –
