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TROUBLESHOOTING GUIDE
1. NO POWER
NO POWER (POWER INDICATOR OFF)
CHECK U718 INPUT VOLTAGE (12V) ?
NO
TROUBLE IN ADAPTOR or INVERTER
YES
CHECK 5VST VOLTAGE (5V) ?
NO
TROUBLE IN U718
YES
CHECK U617's PIN 6. IS THIS PIN OSCILLATED?
NO
TROUBLE IN U617 or X603
YES
TROUBLE SOMEWHERE ELSE
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2. NO RASTER
NO RASTER
CHECK J805 PIN 10 (12V) ? YES
NO
TROUBLE IN POWER ADATER
CHECK J805 PIN 5 (5V) ? YES
NO
TROUBLE IN INVON PATTERN
CHECK U617 PIN 42 H. PULSE ? YES
NO
TROUBLE IN U106, U105, U101, U109
CHECK U205 PIN 40 H.PULSE ? YES
NO
TROUBLE IN U102, U101, U109
CHECK U205 PIN 117 H.PULSE? YES
NO
TROUBLE IN U205
CHECK U205 PIN 115 AD CLOCK ? YES
NO
TROUBLE IN U205
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YES CHECK U307 PIN 246 H.PULSE ?
NO
CHECK HS-PLL PATTERN
YES
CHECK U307 PIN 254 DOT CLOCK ?
NO
CHECK ADC-CLK PATTERN
YES
CHECK MEMORYCLK U410, U411, U412 PIN 35 ?
NO
TROUBLE IN U307
YES
CHECK U307 PIN 93, 94 DOT CLOCK ?
NO
TROUBLE IN U307
YES
CHECK U307 PIN 124 D26 (H.PULSE) ?
NO
TROUBLE IN U307
YES
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YES
CHECK U513, U514 PIN 27 H.PULSE ?
NO
TROUBLE IN U307
YES
CHECK U513, U514 PIN 28 V.PULSE ?
NO
TROUBLE IN U307
YES
CHECK U513, U514 PIN 31 DOT CLOCK?
NO
TROUBLE IN U307
YES
CHECK U513, U514 PIN 30 H.PULSE?
NO
TROUBLE IN U307
YES
TROUBLE IN LCD MODULE
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3. NO CLOCK (CLOCK GENERATOR)
NO DOT CLOCK
CHECK U205 PIN 40 H. PULSE ?
NO
TROUBLE IN U101, U109, U105, U106
YES
CHECK U205Vcc 3.3V ?
NO
TROUBLE IN U729
YES
CHECK U205 PIN 40 H. PULSE ?
NO
TROUBLE IN U101, U109, U105, U106
YES
CHECK U205 PIN 115 CLOCK ?
NO
TROUBLE IN U205
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4. TROUBLE IN DPM
TROUBLE IN DPM
CHECK U109 PIN 1, 5 ?
NO
CHECK PC CPC IS NOT GOING INTP DPM OFF MODE
YES
CHECK U617 (MICOM) PIN 1, 42 (H/V INPUT) SIGNAL ? YES
NO
TROUBLE IN U109
CHECK U617 PIN 6 WAVEFORM (24MHz) ? YES
NO
TROUBLE IN X603
CHECK U617 PIN 26 (5V) ?
NO
TROUBLE IN SIGNAL CABLE
YES
TROUBLE IN PC
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