Sharp ZQ-5000 Service Manual page 13

To protect user data when servicing, abnormal ZQ-500015200 is con-
nected with normal ZQ-5000/5200 with transmission cable and user
data are transmitted by command input from the abnormal set to the
normal set. After completion of servicing, the data are restored from
the normal set to the repaired set.
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Data communication cable (Part code: QCNW-I 349CCZZ)
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12. Self checker
This unit is equipped with the self checker in the ROM. Operations of
the self checker are described below:
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pressing " ON" and " 9" keys, press the RESET switch.
Diag menu screen 1
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KEY CHECK
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LCD CHECK
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PRODUCT CHECK 1
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RAM DATA SET
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RAM DATA CHECK
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key.
Check that the pattern A is normally displayed.
Check that the pattern B is normally displayed.
Check that the pattern C is normally displayed.
Check that the pattern D is normally displayed.
Check that the pattern E is normally displayed.
CAPS
Pattern B (Reversion of
Pattern A
Confirm the display of " RAM 32K OK" , and confirm the
buzzer sound.
ZQ-5200: Confirm the display of " RAM 64K OK" , and confirm the
buzzer sound.
Example of ERROR display
ERROR
RAM CHECK
CHECK ERROR
CHECK ERROR
BUZZER CHECK
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<Exiting from the diag mode>
The Organizer is
not initialized,
or memory has
been impaired.
Enter " Y" to
INITIALIZE and
CLEAR ALL memory
contents.
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key. (The organizer goes out of the diag mode, and the
screen displays the calendar.)
error occurs.
error occurs.
For the key read-in-check, the ke to
pressed next is displayed in sectjon A
Follow the display and press the key.
When an erroneous key is pressed,
Press correctly again.
When error pressing is repeated more
than 10 times, or when <CHECK O.K.> is
displayed (key check is completed): press
either of F\ , /C.CEl , or 1-1
key to return to the diag menu screen.
CAPS
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