- 12 -
2. NO RASTER
TROUBLE IN
INVON PATTERN
CHECK
J702 PIN 8 (5V) ?
NO
NO RASTER
TROUBLE IN
BULT-IN POWER
or L703, L704
CHECK
J702 PIN 1, 2, 3
(12V) ?
NO
TROUBLE IN
X501
CHECK
X501
H. PULSE ?
NO
TROUBLE IN
U201
CHECK
U201(GM5020) ?
NO
TROUBLE IN
U201
NO
TROUBLE IN
U201
CHECK
U301, U302, U303
PIN 35
MEMORYCLK?
NO
YES
YES
YES
YES
YES
CHECK
L201, L202, L203
PULSE?
Summary of Contents for UltraSharp 1800FP
Page 17: ...3 POWER BOARD Component Side 4 POWER BOARD Solder Side ...
Page 18: ...5 CONT A G R4 R6 P N 6870T495C11 C21 SW7 SW6 SW5 SW4 R5 R7 R3 SW3 SW2 SW1 J1 A G C1 C2 ...
Page 19: ... 19 EXPLODED VIEW 1 13 14 11 10 6 5 7 15 2 8 9 4 c 12 a a b 3 ...
Page 28: ... 28 ...
Page 29: ... 29 ...
Page 30: ... 30 ...
Page 31: ... 31 ...
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Page 35: ... 35 ...