Epson Stylus COLOR 3000 Service Manual - Page 139

Component Repair of the C203 MAIN Board, Symptom : The printer does not operate at all.

Get Epson Stylus COLOR 3000 - Ink Jet Printer PDF manuals and user guides View all Epson Stylus COLOR 3000 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 139 highlights

EPSON Stylus COLOR 3000 5.4 Component Repair of the C203 MAIN Board This section provides information which enables you to repair and replace defective components on the C203 MAIN board. Table 5-6 and 5-7 lists the causes for each symptom in order of possibility, with which you are able to find and repair the defective part. Table 5-6. Component Repair of the C211 MAIN Board Condition Cause Checkpoint Solution Symptom : The printer does not operate at all. Reset circuit is defective. Check the following signals for the waveforms: IC9:/ IC3: Replace the MAIN board or the reset IC. Selection of ROM and sub gate array is improper. CPU doesn't operate. (The driver mechanism doesn't operate properly at power on/off.) Waveform (6) Check the waveform for one of the Replace the MAIN following signals output from the board. CPU (IC5) for the change in the signal High and Low : /CS0 (Pin 1), /CS1 (Pin 2), /CS2 (Pin128), /CS3 (Pin 127) Waveform (7) CG-ROM or PROM is defective. Replace the MAIN board or PROM. CPU is defective. Check the waveform for one of the Replace the MAIN following signals output from the board or CRU1. CPU (IC5): XTAL (Pin 85), EXTAL (Pin 86) Rev. A Waveform (8) 5-11

  • 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
EPSON Stylus COLOR 3000
Rev. A
5-11
5.4 Component Repair of the C203 MAIN Board
This section provides information which enables you to repair and replace defective components on the
C203 MAIN board. Table 5-6 and 5-7 lists the causes for each symptom in order of possibility, with which
you are able to find and repair the defective part.
Table 5-6. Component Repair of the C211 MAIN Board
Condition
Cause
Checkpoint
Solution
Symptom : The printer does not operate at all.
Reset circuit is
defective.
Check the following signals for the
waveforms:
IC9:/
IC3:
+5V
RESET
Waveform
(6)
Replace the MAIN
board or the reset IC.
CPU doesn’t operate.
(The driver mechanism
doesn’t operate properly
at power on/off.)
Selection of ROM
and sub gate array
is improper.
Check the waveform for one of the
following signals output from the
CPU (IC5) for the change in the
signal High and Low :
/CS0 (Pin 1),
/CS1 (Pin 2),
/CS2 (Pin128), /CS3 (Pin 127)
Waveform (7)
Replace the MAIN
board.
CG-ROM or PROM is defective.
Replace the MAIN
board or PROM.
CPU is defective.
Check the waveform for one of the
following signals output from the
CPU (IC5):
XTAL (Pin 85), EXTAL (Pin 86)
XTAL
Waveform (8)
Replace the MAIN
board or CRU1.