It is behind the inner right cover that is located to the right of the transfer belt unit. There is a cover stick over it. SP 5915 if set to 0 will disable the mechanical counter. If it is disconnected, say by a customer, without being disabled, SC 901 will occur and copying/printing will be prohibited.
Just thought that even if he has to replace the nvram at least he can still have a valid counter available.
When the battery voltage in NVRAM falls below 2.7v reset the machine - goes off when entering into sleep mode.
When the voltage is below 2V reset the counter copies to 0,000,000 ip address of time ...
Replace nvram or repair
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