OLYMPUS C-300 Zoom Repair Procedure V1
D. REPAIR PROCEDURE
C-300ZOOM / D-550 ZOOM
D. REPAIR PROCEDURE
[1] TROUBLESHOOTING GUIDE ..................................................................................D-2
POWER LOSS INOPERATIVE ...............................................................................D-2
TAKING INOPERATIVE .........................................................................................D-2
NO PICTURE ..........................................................................................................D-2
D-1 Ver. 1
[1] TROUBLESHOOTING GUIDE
D. REPAIR PROCEDURE
C-300 ZOOM / D-550 ZOOM
TAKING INOPERATIVE
PUSH SHUTTER
BUTTON
IC301-29, 30
(1st, 2nd)
PULSE INPUT
NO
YES
CN301-5, 6
(P ON, P(A) ON)
LOW
HIGH
IC301-62, 63, 64
HIGH
NO
YES
SERIAL
COMMUNICATION
NG
OK
CHECK CA-A BLOCK
NO PICTURE
CLK (80 MHz)
INPUT TO
IC102-283 (CLK IN 1)
NO
CLK (40 MHz)
INPUT TO
IC101-132 (CLK IN 1)
OK
IC101-61 (ZAS)
OK
IC101-52
(ZBREQ)
OK
IC101-56
(ZBGRNT)
OK
IC101-118, 119
(IRL1, 2)
OK
CHECK SOLDERING OF
EACH CPU AND
MEMORY PIN
YES
NG
NG
NG
NG
NG
POWER LOSS INOPERTIVE
COVER CARD
SWITCH POSITION
CHECK
SHUTTER BUTTON,
WIRE, RB302
CHECK IC301,
ST-A BLOCK
CHECK
IC301, CA-B BLOCK,
ST-A BLOCK
CHECK IC301,
RB303, Q3003,
CA-A BLOCK
MAIN CLOCK FOR SYSTEM OPERATION
NO OPERATION IF ABSENT
CHECK X1101 OSCILLATOR AND IC111
BASIC CPU BLOCK
CHECK IC102-272,
R1024
ALWAYS APPEARS WHEN CPU, ETC. IS ACCESSED
CHECK IF CPU IS READKING PROGRAM, AND
CHECK ADDRESS AND DATA BUS OF IC121
REQUEST FOR USE OF DATA BUS FROM
ASIC TO CPU NO DMA TRANSMISSION
IF ABSENT
RECEIVES ZBREQ SIGNAL AND GIVES PERMISSION
TO ASIC FOR USE OF DATA BUS
NO DMA TRANSMISSION IF ABSENT
INCORRECT HANDSHAKING BETWEEN 8-BIT
CPU AND RS-232C
CHECK EACH INTERFACE
IC301-45 (CAM ON/
OFF) PULSE INPUT
IC302-7 (UNREG)
CLOSE
BARRIER SW
OPEN
YES
HIGH
IC301-24
(VDD)
HIGH
IC301-36
(RESET)
HIGH
IC301-43
(BAT OFF)
HIGH
IC301-40
OSCILLATION
YES
IC301-37
OSCILLATION
YES
CHECK IC301
OPEN
CLOSE
OPEN THE BARRIER
NO
LOW
CHECK ST1 BLOCK
LOW
LOW
CHECK IC302, R3006
LOW
NO
NO
R3017, C3010, C3016
CLOSE THE
COVER CARD
SW ON
CHECK BARRIER
SW, LEAD WIRE,
R3019
CHECK IC302
CHECK R3007
CHECK X3001
CHECK X3002,
NORMAL
D-2 Ver. 1
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