Lexmark T620 Service Manual - Page 114
Operator Panel Service Check, 5XX/7XX
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4069-5XX/7XX FRU 4 Motor does not turn, no gear error code 936 or User message 201 Paper Jam displays. Action Check the voltages at on the system board. Pin number and voltage: J27-1 = +24 V dc J27-4 = +5 V dc (static) 0 V dc (when main drive motor running) J27-5 = + 5 V dc (static) 0 V dc (when main drive motor running) J27-6 = +5 V dc (static) +2.5 V dc (when main drive motor running) J27-7 = +5 V dc (static) 0 V dc (when main drive motor running) J27-8 = +5 V dc (static) +5 V dc (when main drive motor running) J27-11 = + 5 V dc (static) 0 V dc (when main drive motor running) If the voltage is incorrect, replace the FRUs in the following order: main drive motor assembly system board Operator Panel Service Check Operator Panel Buttons Service Check Note: Before continuing with this service check do the "Button Test" on page 3-14 in the diagnostic aids chapter. FRU 1 Operator Panel Assembly Action If any button fails the Button Test, replace the operator panel assembly. 2-86 Service Manual