4-6-1. Electrical offset adjustment method
Note: Doing adjustment by the state that a disc does not enter.
1.Confirm the power voltage is 1.5V.
2.Set to the test mode.
3. Press the – key of main unit activates the overall adjustment mode.
Main unit LCD display
ASS
4. Press the + key. |
MZ-E300
4-7. OVERALL ADJUSTMENT MODE
4-7-1. Overall adjustment mode structure
TEST MODE (Display Check Mode)
VOL – key or . key
Overall Adjustment
Title Display(ASSY**)
| . | key | CD overall | x key | |
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| Adjustment |
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Main unit LCD display |
035: XX |
5. Press the + key once more. Adjustment is complete when the |
adjustment value appears in the “XX” position. |
>N key
VOL + key
> N key
MO overall |
| x key |
Adjustment |
| x key |
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Electrical offset | ||
Adjustment key |
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4-6-2. Display segment check mode
1.Enter test mode. Display continuously alternates between the following three conditions: entire LCD is lit, entire LCD is ex- tinguished, version info is shown, and so on.
2.Press and hold the x key on the main unit to enter display segment check mode.
*Should segments not be displayed correctly at this point, a short- circuited COM terminal and/or SEG terminal on the micropro- cessor chip (IC801) are possible causes.
3.Display returns to condition “1” as soon as the x key is re- leased.
PLAY MODE/DISPLAY key
x key
NV reset
Perform overall adjustments according to the following procedures (procedures may differ depending on the microprocessor chip version used).
For Ver. 1.10, if it is no good in the overall adjustment, please repeat the overall adjustment several times.
Microprocessor Version 1.10
1Clear NV.
2Electric offset adjustment.
3Rewriting of RAM 633h
1.switch to manual mode No. 100.
2.Press the DISPLAY key on the remote control unit 6 times consecutively to enter RAM mode.
3.Change the RAM address to 633h.
Use the following keys on the remote control unit to change the digits of the RAM address:
“The DISPLAY key for the first digit (hundreds), the x key
for the second digit (tens) and the >B key or the . key for the third digits (units).”
4. Use the + and – keys on the remote control unit to set the adjustment value of No.633h to 03h and press once the pause key on the remote control unit to write this value to NV.
“(If NV is cleared, the value is 00h.)
5.Press the DISPLAY key once more to change the display to “address and adjustment value display”.
6.Switch to the overall adjustment.
4CD overall adjustment * (Not to turn off the power between the items 3 and 4 .)
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