Pwb-A Board; Pwb-E Board - Epson H5200 - TM B/W Thermal Line Service Manual

General Description
1.5.4
This is the engine controller board. It consists of an M37451M4 8-bit CPU (including a MASK
ROM) and a gate array. The board controls laser seaming (the polygon mirror drive motor), image
I

1.5.5 PWB-E Board

The PWB-E is the power supply board, which consists of a switching regulator circuit. It converts
the AC line voltage into +24 V and +5 VDC voltages. There are two types of power supply board,
the 100/120 V type and 220/240 V type. The difference between the two circuis is o~y in tie input
section.
touch
Do not
1-38
Figure 1-21. PWB-A Board
F2
F1
Figure 1-22. PWB-E Board
M4
Rev. A