Epson Stylus Pro 9900 - Chapter 2 OPERATING PRINCIPLES

Epson Stylus Pro 7700/7710/7700M/7710M/7900/7910/9700/9710/9900/9910/WT7900/WT7910/9890/9908/7890/7908 Revision I
DISASSEMBLY & ASSEMBLY Overview 171
Confidential
4.1.4 Cautions when replacing the Main Board Assy/Power Supply Board Assy
For this printer, so as to drive the CR Motor and PF Motor properly, the characteristics of them are stored in the Main Board Assy, and used to optimize the performance in
accordance with the Power Supply Board Assy. Therefore, when replacing the parts mentioned below, check if the motor characteristics label is attached on the motor, and make
sure to perform an appropriate measure for the concerning replacement.
Motor characteristic label
Parts to replace
Presence of motor characteristics label
Measure
CR Motor PF Motor
Power Supply Board Assy
Yes Yes Replace the Power Supply Board Assy only.
No No
Replace the CR Motor and the PF Motor along with the Power Supply Board Assy.
After replacement, perform “CR/PF Motor Characteristics Writing”.
Yes No
Replace the PF Motor along with the Power Supply Board Assy.
After replacement, perform “PF Motor Characteristics Writing”.
No Yes
Replace the CR Motor along with the Power Supply Board Assy.
After replacement, perform “CR Motor Characteristics Writing”.
Main Board Assy
(When parameter (NVRAM)
backup is failed.)
Yes Yes
Replace the Main Board Assy only.
After replacement, perform “CR/PF Motor Characteristics Writing”.
No No
Replace the CR Motor and the PF Motor along with the Main Board Assy.
After replacement, perform “CR/PF Motor Characteristics Writing”.
Yes No
Replace the PF Motor along with the Main Board Assy.
After replacement, perform “CR/PF Motor Characteristics Writing”.
No Yes
Replace the CR Motor along with the Power Supply Board Assy.
After replacement, perform “CR/PF Motor Characteristics Writing”.