FX-2180 Service Manual
Operating Principles
Rev. A
2-3
2.1.3 Control Circuit
The control circuit consists of C244MAIN control board and the operation
panel board.
2.1.3.1 Overview of Control Circuit Operation
This printer’s control circuit includes a TMP96C141BF that ran at 17.20MHz,
an E05B50** gate array, a 2Mbit PROM (or 2M / 4Mbit Flash-ROM), a 1Mbit
/ 4Mbit PS-RAM (or SRAM), a serial EEPROM (or parallel EEPROM) and
other circuits. This control circuit oversees control of all the components in
the printer. The following chart shows the control circuit block diagram.
G a t e A r r a y
C P U
C S F D r v .
C S F
D e t e c t o r
P E - R e a r
D e t e c t o r
P E - F r o n t
D e t e c t o r
T O P
D e t e c t o r
H o m e
D e t e c t o r
R e l e a s e
L e v e r
D e t e c t o r
G a p
L e v e r
D e t e c t o r
+ 3 5 V V o l t a g e
D e t e c t o r
H e a d D r v .
H e a d T e m p .
D e t e c t o r
E P R O M
P S - R A M
o r S R A M
S e r i a l
E E P R O M
R e s t I C
P F D r v .
C R D r v .
P a n e l S W / L E D s
O p e r a t e S W
P a r a l l e l I / F
T y p e B I / F
5 V
G L
3 5 V
G P
I C 2
I C 1
E 0 5 B 5 0 * *
T M P 9 6 C 1 4 1 B F
Q 2 ~ Q 1 9
I C 1 2
S L A 7 0 2 4 M
U D N 2 9 1 7 E B
I C 8
I C 1 5
: D a t a B u s
: A d d r e s s B u s
I C 3
I C 5
P S C
P W D N
P o w e r S u p p l y
B o a r d
I C 9
Figure 2-3. Control circuit Block Diagram
The functions of main components of control circuit on C244MAIN board are
shown on the following table.
Table 2-3. Functions of Main Components
IC
Location
Function
Gate array
(E05B50**)
IC1
Control the functions below;
•
System control
•
Peripheral device control
CPU
(TMP96C141BF)
IC2
•
Receives data from the host computer
and send it to the input buffer in RAM.
•
Extend the input data held in the buffer
to create Image data.
•
Load image data to the image data
buffer.
•
Transfer image data to the printhead.
1 / 4Mbit
PS-RAM
IC3
Buffer and working area
2Mbit PROM
IC5
The ROM contains the program that runs
the CPU and character tables.
Serial EEPROM
(AT93C46)
IC8
Contains following data;
•
Default setting values
•
Market data
•
Mechanism & printhead parameter, etc
SLA7024M
IC9
CR motor drive IC
A2917SEB
IC12
PF motor drive IC
Reset IC
(BH6150F)
IC15
This IC generates the reset signal at power
on or down, and makes reset the CPU and
the gate array.
Summary of Contents for FX-2180 - Impact Printer
Page 1: ...EPSON EPSON EPSON France S A SERVICE MANUAL FX 2180 PRODUIT ...
Page 2: ...6 59 0 18 3LQ PSDFW RW 3ULQWHU EPSON FX 2180 4009047 ...
Page 6: ...REVISION STATUS Rev Date Page s Contents A 1998 04 02 All First release ...
Page 11: ...PRODUCT DESCRIPTIONS 3 7 5 ...
Page 24: ...OPERATING PRINCIPLES 3 7 5 ...
Page 28: ...TROUBLESHOOTING 3 7 5 ...
Page 43: ...DISASSEMBLY AND ASSEMBLY 3 7 5 ...
Page 76: ...ADJUSTMENT 3 7 5 ...
Page 86: ...MAINTENANCE 3 7 5 ...
Page 89: ...APPENDIX 3 7 5 ...
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