Epson LQ-1050 Technical Manual page 191

5.3.2 MONMA Board
The MONMA board can be repaired using the diagnostic tool. Table 5-9 lists the main parts of the
Location
4B
6B
10A
9B
7B
2A
3A
10C
1A
7A
8A
ZD5-ZD7
ZD 12
ZD8-ZD 11
7C
Q25
Q26, Q27
Q28, Q29
Q32, Q37
Q35, Q43
Q36
Q44
Table 5-9. MONMA Board Main Parts List
Name
pPD7810HG
M546 10P
E05A09BA
E05A02LA
E05A 10AA
STK6722H
HM65256 BLSP-12
HM6264 ALSP-12
MA4300H-TA
MA4240M-TA
MA4330H-TA
MA4033L-TA
0 5 A 2 4 7
RD91 EB
TL431 CLPB
NE555P
2SD 1978-12
2SC3293
2SD152 1
2SC 18 15Y-TPE2
2SC3 157
2SA 1020-TPE6
2SB765K
2SD 1579-T
2SD560(4)
2SA 10 15-TPE2
Hex inverters with open-collector output
Hex buffer with open-collector output
Quad line drivers
Quad line receivers
8 bit CPU
8bit parallel l/F IC
Stepper motors control gate array
Printhead data control gate array
Memory management unit gate array
Stopper motor drive IC
32K X 8 bit 120 ns PS-RAM
8K X 8 bit 120 ns ST-RAM
3 0 . 2 - 3 1.8V 250mA 370 mW
2 3 . 5 - 24.7V 250mA 370 mW
3 3 . 2 - 34.9V 250mA 370 mW
3 . 1 2 - 3.28V 250mA 370 mW
4 4 - 4 9 V
8 5 . 0 - 96.OV
Adjustable presison shunt regulator
Precision Timer
1.5A
120V
2A
5 0 V
5 0 V 1.5A
150mA
5 0 V
1 Oov 10A
2A
5 0 V
3A
8 0 V 3A
5A
120V
5 0 V 150mA
5-19
Description
0.9W
2 0 W
1 Ow
6 0 W
3 0 W
1 .5W