When ordering the new belt, order the following parts as it is sometimes dicult to remove the screws from the
belt block adjuster without stripping the heads. If this happens it is easiest to just replace the block and screws.
Part Number Quantity Description
6600-1372-500 1 Lift Belt
6600-1360-500 1 Belt Block Cover
6600-1357-500 1 Belt Adjuster, Bottom
6600-1151-400 2 Screw, M3X10 Flat Head Socket
NOTE: For instructions on replacing the belt, refer to section 5.4.3.4.
4.6.11 Troubleshooting the 50 Pin Ribbon Cable
All of the communication between the control and relay boards passes through the 50 pin ribbon cable. Many
of the troubleshooting procedures in this manual recommend that you verify continuity for specic pins in the
cable. Because it is dicult to remove and measure the cable without possibly changing the resistance, it is
suggested that you keep a spare 50 pin ribbon cable to use as a troubleshooting tool.
4.6.12 Troubleshooting the Toroidal Transformer
Perform the following tests in service mode. The referenced voltages should always be present when the unit is
in service mode. In normal operating mode, the voltages are not present if safety relay 2 contacts are open.
1. Check the output voltage of the toroidal transformer at J44 pins 1-2 and at J44 pins 3-4. Voltages should
be about 15 volts AC .
2. If the voltage is not present verify that mains voltage is present at the primary input to the toroidal
transformer in service mode. This voltage can be measured at relay board connector J51 pins 1-2. It can
also be measured at the conguration plug on the toroidal transformer pins 1-4.
3. If the primary voltage is present and there is no output voltage, the toroidal transformer is defective.
4. If the primary voltage is not present, then replace the relay board.
4.6.13 Interpreting Serial Numbers
Datex-Ohmeda products have unit serial numbers with coded logic which indicates a product group code,
the year of manufacture, and a sequential unit number for identication. The serial number is in the following
format:
AAAX11111
The X represents an alpha character indicating the year the product was manufactured; H = 2004, J = 2005,
etc. I and O are not used.
64 6600-0343-000 104 © 2001 by Datex-Ohmeda, Inc.. All rights reserved.
Chapter 4: Troubleshooting
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