Epson LQ 1050 Technical Manual - Page 177

Control Circuit, 4.3 Model-3 B10/3B60 Printer Mechanism, Table 5-8. Electric

Get Epson LQ 1050 - B/W Dot-matrix Printer PDF manuals and user guides View all Epson LQ 1050 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 177 highlights

REV.-A 5.3.2 Control Circuit The control circuit can be repaired using the diagnostic tool to identify the problem. Table 5-7 lists the main parts of the control circuit. Table 5-7. Control Circuit Parts List Location 4B 3A 7A 5A, 6A 2A 4A Q1-Q9, Q16 Q15 Q17 Q 18-Q21 Q22, Q25, Q30 Q23, Q24 Name MPD78 10HG E05A15HA E05A16GA HM6264ALSP STK6722H 27256 2SC3987 2SB76SK 2SB1318 2SD560(4) 2SC1815 2SA1015 Description Main CPU 15 MHz Gate Array Gate Array Static RAM 64K bit Hybrid IC, Carriage Controller 32K Byte P-ROM 60V t 10V, 3A, 2W 120V, 3A, 1.5W 100V, 3A, 1.2W 120V, 5A, 1.5W 60V, 150mA, 400mW 50V, 150mA, 400mW 5.4.3 Model-3 B10/3B60 Printer Mechanism Use the diagnostic tooI to detect malfunctions among the carriage motor, paper-feed motor, and sensor, Table 5-8 lists the specifications for these components, use the printing test, and also inspect visually. Table 5-8. Electric Device List Name Carriage Motor Paper Feed Motor Plunger Type Voltage : Coil Resistance : Excitation : Type Voltage : Coil Resistance : Excitation : Type Voltage : Coil Resistance : Description 4-phase, 200 pole stepper motor Driving +36VDC, Holding . . . +5VDC 11 Q & 7% (25 "C/phase) 1-2 phase, 2-2 phase 4-phase, 48 pole stepper motor Driving +36VDC, Holding . . . +5VDC 78 Q A7Q (25 "C/phase) 2-2 phase Solenoid Driving . . . +36VDC, Holding . . . +5VDC No operation . . . OV 2 2 f-l *5% (20"C) 5-20

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
  • 199
  • 200
  • 201
  • 202
  • 203
  • 204
  • 205
  • 206
  • 207
  • 208
  • 209
  • 210
  • 211
  • 212
  • 213
  • 214
  • 215
  • 216
  • 217
  • 218
  • 219
  • 220
  • 221
  • 222
  • 223
  • 224
  • 225
REV.-A
5.3.2 Control Circuit
The control circuit can be repaired using the diagnostic tool to identify the problem. Table 5-7 lists the
main parts of the control circuit.
Table 5-7. Control Circuit Parts List
Location
Name
Description
4B
MPD78
10HG
Main CPU 15 MHz
3A
E05A15HA
Gate Array
7A
E05A16GA
Gate Array
5A, 6A
HM6264ALSP
Static RAM 64K bit
2A
STK6722H
Hybrid
IC,
Carriage Controller
4A
27256
32K Byte P-ROM
Q1-Q9,
Q16
2SC3987
60V
t
10V, 3A,
2W
Q15
2SB76SK
120V, 3A,
1.5W
Q17
2SB1318
100V, 3A,
1.2W
Q 18-Q21
2SD560(4)
120V,
5A,
1.5W
Q22, Q25, Q30
2SC1815
60V, 150mA,
400mW
Q23, Q24
2SA1015
50V, 150mA,
400mW
5.4.3 Model-3 B10/3B60 Printer Mechanism
Use the diagnostic tooI to detect malfunctions among the carriage motor, paper-feed motor, and sensor,
Table 5-8 lists the specifications for these components, use the printing test, and also inspect visually.
Table 5-8. Electric
Device List
Name
Description
Carriage Motor
Type
4-phase, 200 pole stepper motor
Voltage
:
Driving
+36VDC,
Holding . . .
+5VDC
Coil Resistance :
11
Q
&
7% (25
”C/phase)
Excitation
:
1-2 phase, 2-2 phase
Paper Feed
Type
4-phase, 48 pole stepper motor
Motor
Voltage
:
Driving
+36VDC,
Holding . . .
+5VDC
Coil Resistance :
78
Q
A7Q
(25
”C/phase)
Excitation
:
2-2 phase
Plunger
Type
Solenoid
Voltage
:
Driving . . .
+36VDC,
Holding . . .
+5VDC
No operation . . . OV
Coil Resistance :
22
f-l
*5%
(20”C)
5-20