Sharp Wizard OZ-770PC, Service Manual

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4. EXPLANATION OF DIAGNOSTICS AND CHECK ITEMS
NO. CHECK ITEM CHECK METHOD DISPLAY CRITERIA or NOTE
1 Start Power SW ON
Reset while Pressing ESC+D (Diag Menu, Page 1 of 5)
1. LCD CHECK
2. PCB CHECK
3. KEY CHECK
4. BACKLIGHT CHECK
5. FINAL CHECK
6. LOW BATT. CHECK
7. H SEND CHECK
8. UART ECHO CHECK
ROM Ver. Vx,x
2 LCD Check Push 1 key Displayed Frame Pattern
Push ENTER key Displayed Checked Pattern 1
Push ENTER key Displayed Checked Pattern 2
Push ENTER key Displayed Rain Drop Pattern 2
No Rain Drop
Push ENTER key Contrast changes smoothly to black out,
fades out, then returns to the initial level.
3 PCB Check Push ‘2’ key
Push ENTER
SRAM CHECK.....
ROM CHECK.....
ALARM TONE TEST..... Test OK should be seen, or a error alarm
tone would be heard.,
4 KEY Check Push ‘3’ key
Push all key 45 (hex) different characters and the no.
of keys are displayed. When push a key, one of corresponding
characters will be disappeared and the no.
of key will be decrement by one.
Keyboard will be OK only if all characters
had been disappeared after all keys had
been pressed.
5 Backlight check Push ‘4’ key BackLight is on & no indication on time...30sec
6 Low Battery Check Push ‘6’ key
Drop the operating Volt. 2.5V
Drop the operating Volt. 2.1V
Drop the operating Volt. 1.7V
LOW BATTERY CHECK
LOW BATTERY CHECK (no change)
CAUTION!
IT IS LOW BATTERY.
FATAL WARNING.
IT IS NO BATTERY
7 H Send Check Connect the OZ/ZQ-700
series unit to PC Push ‘7’ HHHHH.......
HHHHH.......
:
: Press CANCEL to exit
Check ‘H’ displaying to PC Monitor
8 Uart Echo Check Connect the OZ/ZQ-700
series unit to PC & run rest
Cradle PC program. UART CHECKING.......
Press CANCEL to quit Test OK should be seen.
(Frame Pattern)
(Checked Pattern 1)
(Checked Pattern 2)
(Rain Drop)
(Contrast Check)
Dark
Light
Time