Siemens SIRECUST 1280 Service Manual page 118

SECTION 6.7
START
A
ANY DISPLAY?
POWER UP OKAY
SOMETIMES, BUT
SOMETIMES
NOT?
10
| АБ.
ADJUST +65V AND +15V 5
NO POWER GREEN LED SUPPLIES. REPLACE
INPUT MODULE BLINK WHEN GREEN LED ON? POWER SUPPLY BOARD
FUSES OKAY? POWER APPLIED? (6.7A.1) IF PROBLEM IS RE
(6.74.3) (6.7A.2) NOT CORRECTED. 1)
(6.7B.1)
a
VERIFY THAT
HARNESSES
CHECK POWER OPERATOR YES INTERCONNECTING
INPUT MODULE, INTERFACE LEDS DISPLAY SUBSECTION
REPLACE IF BAD. TOGGLE FOR KEY BOARDS ARE SECURELY
(6.7A.4) PRESS? CONNECTED TO
(6.7A.17) BOARDS.
(6.7A.18)
VERIFY THAT SOCKET CHECK THAT BOARDS
POWER YES CONNECTOR X4 ON ARE SECURELY SEATED
SUPPLY BOARD POWER SUPPLY BOARD ON MOTHER BOARD. CHECK CURVE BOARD,
FUSES OKAY? Is CONFIGURED IF PROBLEM " REPLACE IF BAD.
(6.7A.5) PROPERLY FOR LINE IS NOT CORRECTED, (6.7A.19)
VOLTAGE AT SITE. CONTINUE.
(6.7A.7) (6.7A.17)
REMOVE LOADS FROM CHECK SUPPLY
REPLACE BLOWN POWER SUPPLY BOARD. VOLTAGES FOR
FUSE(S). IF FUSE(S) CHECK SUPPLY DISPLAY SUBSECTION.
BLOW AGAIN, REPLACE VOLTAGES. REPLACE REPLACE POWER
POWER SUPPLY BOARD. POWER SUPPLY BOARD SUPPLY BOARD
(6.7A.6) IF BAD. IF BAD.
(6.7A.8) (6.7A.20)
| x
CHECK CONNECTION
REPLACE FUSE(S). IF BETWEEN POWER 、
FUSE(S) BLOW AGAIN, PERFORM SUPPLY BOARD AND
CHECK POWER INPUT BOARD-BY-BOARD TURN Z-AMP BOARD.
MODULE AND POWER ON PROCEDURE TO REPLACE HARNESS IF
SUPPLY BOARD. ISOLATE BAD BOARD. BAD. IF PROBLEM IS
(6.7A.3) (6.7A.9 - 6.7A.16) NOT CORRECTED,
REPLACE Z-AMP
BOARD. (6.7A.21)
1 | 2 | 3 | 4 | 5 6 | 7 | 8 | 9 10
Figure 6-1.
Troubleshooting Flow-chart, Sheet 1 of 5