46
BASE ASSEMBLY - Heater Pad, P/N
45950
EVALUATION AND CHECKING OF HEATER PAD
A. If there is a heating problem with the processor, and a defective Heater Pad is
suspected, be sure that the Heater Pad assembly (45950) is
actually defective
before replacing it. Perform the followsteps below.
B. Steps to take to check if Heater Pad is defective.
1. Remove cover from processor.
2. Carefully remove transport wash dry rack, avoiding contamination of chemistry.
3. Remove the black cover (unscrew two (2) Phillips head screws) in the left rear
compartment.
4. In the left rear compartment. Unplug the white connector (with the two (2) black
wires) labeled "HEATER PAD" - pinch the two side tabs while pulling on the
connector.
5. Measure the resistance across the two metal terminals in the white connector. The
value must be between 52.5 and 60.0 Ohms.
6. If the resistance is within this range, the Heater Pad is good, and the source of the
heating problem is something else. If the resistance falls outside of this range, it
is defective.
7. Once the Heater Pad assembly is shown defective, perform the procedures
provided on page 47 to replace the Heater Pad assembly. If the problem is not
the Heater Pad, reconnet wires removed above and replace racks and covers.
8. Perform the procedures of TROUBLESHOOTING GUIDE SECTION 1 -
CHEMISTRY TEMPERATURE CONTROL PROBLEMS provided on page 27 as
necessary.
CLEAR
DEVELOPER
DRAIN HOSE
LEADING EDGE OF
HEATER PAD
BLACK WIRES
RETAINER DISK WITH
CRITICAL ORIENTATION
GROUND
CONNECTOR
PURSE LOCK
TIE WRAP
ORANGE, WHITE &
GROUND WIRES
HEATER PAD
RETAINER DISKS
Note:
Above illustration shows bottom view of Base
Assembly See illustration on page 42, item 27,
for Heater Pad location.