Control Panel Keys Malfunctioning; No Led's; All Led's Lit; Same Led Segments Missing From Both Display Windows - Wolf Sub-Zero ICB400 Series Service Manual

TroubleShoot Guide
PROBLEM
J. CONTROL PANEL KEYS
MALFUNCTIONING
K. NO LED's
L. ALL LED's LIT
M. SAME LED SEGMENTS
MISSING FROM BOTH DIS-
PLAY WINDOWS
N. LED SEGMENTS MISSING
FROM ONLY ONE DISPLAY
WINDOWS
O. DOOR / UNIT UN-LEVEL
7011544 - Revision A - November, 2008
International W
International W
POSSIBLE CAUSE
Control Panel Ribbon Cable Plugged in
Wrong
Control Panel or Ribbon Cable
Defective (OR) No Signal Read at
Control Board
Unit Switched OFF
LED Ribbon Cable Plugged in Wrong
No Data from Control Board
Bad Data from Control Board
Bad Data from Control Board
Bad LED Board in Control Panel
SEE SECTION 2 OF THIS MANUAL
7-14
ine Storage
ine Storage
(ICB400)
(ICB400)
Check control panel ribbon cable at control
panel (silver area of terminal away from con-
trol board). Plug in correctly if incorrect.
SEE CONTROL PANEL TEST PROCEDURE
AT BACK OF TROUBLESHOOTING GUIDE
SECTION.
Press POWER key
Check LED ribbon cable. Plug in correctly if
incorrect.
Replace Control Board
Replace Control Board
Replace Control Board
Replace Control Panel Assembly
SEE SECTION 2 OF THIS MANUAL
Series
Series
TEST / ACTION