In this article I will disassemble the Epson stylus photo 900 printer and show you what’s inside
The motherboard.It has an EPSON E01A27CA processor installed on it.Next come the microchips.
-A3974SED DUAL-BRIDGE PWM MOTOR DRIVER chip.
– PWM LB1946.The chip is a stepper motor driver with current regulation.
-A3529MUVV chip.
-The M51V4265E-60TK chip is a dynamic RAM.
-There is an inscription “TIF00B” on the body of this chip, under this inscription is the name R27V402, this is 4 MB of single-programmable read-only memory.
-The LVX161284 chip is an IEEE 161284 low-voltage converter transceiver.
-The S93C46 D chip is a serial electrically erasable PROM with a frequency of 1 Kbit.
The switching power supply is made on the L4962 ES chip and the MOSFET transistor 2sk2718
