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Replace
Y
Y
N
N
Resolder
Resolder
Y
Y
Is the soldering weak ?
N
N
Clean and adjust pressure of contact
START
Is the battery contact weak ?
Are there short circuit around the pins
of the LSI (HC3000-08-F1) ?
Is the Heat seal defective ?
Replace the Z808-1 PCB ass'y.
Are there short circuit around the pins of the
LSI (HC3000-08-F1) or between the pins of
the crystal oscillator (
·
2) ?
Replace
Y
N
Y
Replace
Check or replace the chip
capacitors C4 ~ C8
N
N
Y
N
N
Resolder
Resolder
Y
Y
START
Are there short circuit around
the pins of the RAM and ROM ?
Are the voltage V0 ~ V4 OK ?
Is the Heat seal defective ?
Is the LCD defective ?
Replace the Z808-1 PCB ass'y.
2.
Erratic display
9. TROUBLESHOOTING
1.
Intermittent display
Содержание JD-8000
Страница 1: ...R without price MAY 1995 JD 8000 ZX 809AE INDEX ...
Страница 20: ... 18 Button battery RESET Checkpad ...
Страница 29: ... 27 12 SCHEMATIC DIAGRAM ...
Страница 30: ...8 11 10 Nishi Shinjuku Shinjuku ku Tokyo 160 Japan Telephone 03 3347 4926 ...