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 discriminate 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 auto- matically adjusted.
•Operation in the test mode is performed with the remote com- mander. A key having no particular description in the text, indi- cates a remote commander key.
Setting Method of Test Mode
There are two different methods to set the test mode:
1Short TAP801 (TEST) on the MAIN board with a solder bridge (connect pin y; of IC801 to the ground). Then, turn on the
power.
– MAIN Board (Component Side) –
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| R205 | C204 | |
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| X801 |
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8 | 7 | 5 | 148 | 149 |
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0 | 6 | 4 | 150 | 151 |
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1 | 1 | 152 | 2 | 3 |
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| 136 138 | 139 | 58 | 57 | 56 | 54 | 51 | 48 | 44 | 42 | 39 | 36 | 33 | |
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| 134 135 | 137 | 60 | 59 | 55 | 53 | 50 | 47 | 45 | 41 | 38 | 35 | 32 | |
2In the normal mode, turn on the HOLD switch on the set. While pressing the x key on the set, press the following remote commander keys in the following order:
N> t N> t . t . t N> t
. t N > 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 the 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.
Set LCD display
888 |
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All lit | All off | Microcomputer | |
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| version display | |
Remote commander LCD display |
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All lit | 888 | F1SHUF | |
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| REC | u |
All off
Microcomputer
version006 V1.000 display
•When the X key is pressed and hold down, the display at that time is held so that display can be checked.
Caution: On the set having the microcomputer version 1.000, the NV reset failure will occur.
Therefore, in executing the NV reset during electrical adjustment, follow the troubleshooting method of NV reset to perform the NV reset (see page 17).
Releasing the Test Mode
For test mode set with the method 1:
Turn off the power and open the solder bridge on TAP801 (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 17) has not been finished com- pletely, always start in the test mode. (The set cannot start in nor- mal mode)
– 12 –