SERVICE
LASER PRINTER
ML-6000
QwikLaser 6000
Manual
LASER PRINTER CONTENTS
1. Precautions
2. Specifications
3. Reference Information
4. Disassembly and Reassembly
5. Troubleshooting
6. Exploded Views and Parts List
7. Electrical Parts List
8. Schematic Diagrams
MLC AXIAL
NOT USED
MLC AXIAL
220R424 1/8
JS3
510
R407
1/8
1K
R34
1/8
1/8
R422 100
1/8R52 330
+5V
100
R31
1/8
R36
5.6K
+5V
500V
C401
10NF
+5V
+5V
LM393
U5-2
7
Q0
5
Q1
Q26
100PF
C402
50V
22PF
C21
50V
D401
1N4148
1/8
R45
1K
VDD
32
VSS
54
XIN
XOUT
53
50V
C13
10NF
10NF
C15
500V
P5.1_ADC1
P5.2_ADC2
47
48
P5.3_ADC3
P5.4_ADC4
49
50
P5.5_ADC5
P5.6_ADC6
51
52
P5.7_ADC7
34
P6.0
P6.1
35
36
P6.2
P6.3
37
38
P6.4
P6.5
39
40
P6.6
P6.7
41
RESET*
55
64
23
22
P3.2
P3.3
21
20
P3.4
P3.5
19
18
P3.6
P3.7
17
16
P4.0
P4.1
15
14
P4.2
P4.3
13
12
P4.4
P4.5
11
10
P4.6
P4.7
9
P5.0_ADC0
45
46
P1.1_AD1
P1.2_AD2
61
60
P1.3_AD3
P1.4_AD5
59
58
P1.5_AD5
P1.6_AD6
57
56
P1.7_AD7
P2.0
33
P2.1
31
30
P2.2
P2.3
29
28
P2.4
P2.5
27
26
P2.6
P2.7
25
24
P3.0
P3.1
U3
KS88C4316
AVREF
43
44
AVSS
42
EA
8
P0.0_P8
P0.1_A9
7
6
P0.2_A10
P0.3_A11
5
4
P0.4_A12
P0.5_A13
3
2
P0.6_A14
P0.7_A15
1
P1.0_AD0
63
62
1NF
C29
50V
50V
C405
10NF
O2
O3
15
16
O4
O5
17
18
O6
O7
19
OE*
22
28
VCC
1
VPP
+5V
50V
C14
10NF
A11
A12
2
26
A13
A14
27
A2
8
7
A3
A4
6
5
A5
A6
4
3
A7
A8
25
24
A9
20
CE*
14
GND
11
O0
O1
12
13
1
2
+5V
56K
R53
1/8
U2
27C256
A0
10
9
A1
A10
21
23
1/8R426 220
BDCORE
FB5
CN105
SLCON2P
D504
1N4148
1N4148
D505
1/8
R25
330
+5V
50V
C20
22PF100NF
C34
50V 50V
4.7UF
C33C35
4.7UF
50V
50V
C39
1NF
BDCORE
FB1
1/8
R406
3301K
R408
1/8
15K
R55
1/8
JS2
10NF
C18
50V
+5V
74LS06
U205-1
12
R516
1/8
+5V
220R27 1/8
50V
C27
1NF
B8
11
1
DIR
GND
10
VCC
20
30K
*G
19
A1
2
3
A2
A3
4
5
A4
A5
6
7
A6
A7
8
9
A8
18
B1
B2
17
16
B3
B4
15
14
B5
B6
13
12
B7
74LS06
U205-6
13 12
74HC245
U6
1/8
R46
1K
1/8
R54
47K
JS1
1NF
C19
50V
1K
R33
1/8
5.6K
R405
1/8
+5V
+5V
Q3
Q4
16
15
Q5
Q6
14
13
Q7
Q8
12
20
VCC
U205-5
74LS06
11 10
74HCT574
U4
11
CLK
D1
2
3
D2
D3
4
5
D4
D5
6
7
D6
D7
8
9
D8
GND10OC
1
19
Q1
Q2
18
17
220R425 1/8
6.94407MHZ
X1
U205-2
74LS06
34
1N4148
D7
+5V
+5V
FB4BDCORE
1/8
R56
12K
50V
C38
1NF1NF
C40
50V
SCF_CLUTCH
SUPPLY
TONER
COVER
MP_PAPER
FEED
DCU_DATA
CCLK
VDI
MOTOR_PA
MOTOR_PB
MOTOR_EA
PSIZE
FAN_E
+5V
+5V
100PF
C28
50V
PSYNC
EMSG
EBUSY
CMSG
HSYNC
PT_LAMP
CLN
THVEA
BIASPWM
THVPWM
MHV
LREADY
THVREAD
THERM
DCU_CLK
AD(0)
AD(1)
AD(2)
AD(3)
AD(4)
AD(5)
AD(6)
AD(7)
AD(0)
AD(1)
AD(2)
AD(3)
AD(4)
AD(5)
AD(6)
AD(7)
CLUTCH
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(11)
A(12)
A(13)
A(14)
AD(0:7)
PEMPTY
EXIT
SCF_EMPTY
A(15)
A(0:15)
LDON
PMOTOR
VDO
READY
PRINT
MP_CLUTCH
AD(0)A(0)
A(15)
AD(0)
SEL_CASSET
SCF_MOTOR
FUSER
SLEEP
A(0)
A(15)
AD(1)
AD(2)
AD(3)
AD(4)
AD(5)
AD(6)
AD(7)
AD(1)
AD(2)
AD(3)
AD(4)
AD(5)
AD(6)
AD(7)
A(14)
A(13)
A(12)
A(11)
A(10)
A(9)
A(8)
A(1)
8. Schematic Diagrams
8-1 Engine Controller)
Engine Controller (1/6)
1
2
1
2
3
SLCON3P-TONER
CN103
1
2
3
+5V
CN10
SLCON2P-FAN
1NF
C31
50V
JS5
CN7
SLCON3P-CLN
24
3
4
5
6
7
8
9
+24V
0.5
R62
1/2
1
10
11
12
13
14
15
16
17
18
19
2
20
21
22
23
1NF
C41
50V
+5V
D225
1N4148
CN5
DLCON_24P-VIDEO
74LS06
U205-3
56
100R293 1/4
+5VT
50V
C42
1NF
Q10
KSC1008
B
C
E
+5VS+24VS1
10NF
C36
50V
1/8
R59
5.6K
JS6
+5V+5V
+5V
5.6K
R26
1/8
D232
1N4148
5.6K
R51
1/8
1N4148
D227
1/8
R48
2.2K
50V
C231
10NF
50V
C24
10NF
D231
1N4148
D226
1N4148
+24VS1
50V
C17
1NF
5.6K
R61
1/8
+5V
+5V
5.6K
R60
1/8
+5V
1/8R283 100
1N4148
D230
100R284 1/8
BD1
1N4148
D224
1/8R285 100
D228
1N4148
U203-3
7407
56
33
R517
1/2
BDCORE
2
3
4
10V
47UF
C11
+5V
+5VT
+5V
1K
R42
1/8
50V
C30
100PF
SLCON4P-DCU
CN2
1
C22
1NF
50V
C503
100UF
1/8R29 100
1/2
R8
1
1/8
R63
12K
50V
100NF
C46
50V
50V
C26
100NF
100NF
C32
50V
8
9
1N4148
D233
+5V
1N4148
D229
R282 1/8
CN3
SLCON11P
1
10
11
2
3
4
5
6
7
CN6
SLCON8P-SCF
1
2
3
4
5
6
7
8
+5V
100
100PF
C16
50V
JS4
CLN
TONER
VDI
LDON
HSYNC
LREADY
1/8
R28
5.6K
+5V
EBUSY
READY
HSYNC
CMSG
EMSG
CCLK
PRINT
PSYNC
DCU_DATA
DCU_CLK
PMOTOR
PT_LAMP
SEL_CASSET
SCF_MOTOR
SCF_CLUTCH
SCF_EMPTY
VDO
ESJA58-06
D206
Q202
KSD526
B
C
E
1.8K
R274
1/8
2.2K
R250
1/8
U201-2
LM324
Q0
7Q1
5
6Q2
309K
R511
1/8
LM324
U201-4
14
Q0
12
Q1
Q2
13
+18V
+18V
1/8
R505
56K
68K
R515
1/8
6K
1N4148
D502
+18V
+18V
VR201
10KOHM
+18V
1/8
R501
2.2K
JP641
470PF
C211
7407
U203-5
11 10
4.7M
R277
1/4
68PF
C203
2K
D501
+24VS1
6K
C213
100PF
1/8
R252
100
1/2
R216
56
75K
R506
1/8
1N4148
ESJA58-06
D205
1/8
R256
2.2K
6K
C215
470PF
1N4003
D216
1K
R213
1/8
1/8
R504
2.2K
50V
C505
4.7nF
D217
1N4003
+18V
30M
R280
BR
Q502
KSA708
B
C
E
470K
R243
1/8
12.1K
R245
1/8
Q203
B
C
E
Q207
KSA708
B
C
E
ESJA58-06
D207
1/8
R247
78.7K
1N4148
D209
HS202
HEAT_SINK2
KSD526
BR
R220
200M
2.2nF
C221
50V
33NF
C207
50V
R215
100K
1/8
R221
390
470PF
C216
6K
56
R219
1/2
VR205
100KOHM
1/8
10KOHM
VR202
6K
C212
470PF
33K
R500
1/8
R263
33K
1/8
R507
33K
KSC1008
Q503
B
C
E
D503
1N4003
10nF
C501
50V
1/8
ZD201
UZ5.6BCB UZ7.5BM
ZD202
50V
C225
2.2nF
1/8
R509
619K,MF
33NF
C224
50V
T201
TRANS10P
1
10
2
4
5
6
1/8
R225
2.2K
1/8
R240
68K
33K
R249
1/8
1/8
R251
1.2K
THV
HP41
680K
R236
1/8
KSA708
Q209
B
C
E
T203
TRANS10P
110
2
4
56
D203
ESJA57-04
6K
C206
470PF
50V
C214
33NF
1/8
R260
5.6K
+5V
1/8
R508
21.5K,MF
34
1M
R502
1/8
D500
1N4148
D208
ESJA58-06
C
E
1/8
R503
33K
6K
C202
470PF
U203-2
7407
ESJA57-04
D204
+5V
50V
C500
2.2nF
Q500
KSC1008
B
KSA708
Q501
B
C
E
1/8
R248
56K
THVPWM
THVEA
THVREAD
30M
R211
BR
17.4K,MF
R510
1/8
Engine Controller (5/6)
Engine Controller (6/6)
8-2 Controller Diagram
Controller Diagram (1/10)
POWER PC
3C2
3B2
3B2
2B1
2C1
3C1
3C5
4A1,5A1
4A1,3A1
3C2
T182
3C2
3C5
3C2
3C5
2B7
R254
10K
10K
R204
VCC
3.3V
T208
C198
0.1UF
VCC
C208
0.1UF
R221
33
T213
T206
C256
0.1UF
T180
T290
T211
R222
10K
VCC
C61
33UF/16V
R246
2.4K
T217
VCC
VCC
T188
R219
33
R229
10-3216
6
78
T186
C236
0.1UF
R236
10K
RA10
RA33
12
34
5
0.1UF
C261
10K
R225
0.1UF
C199
C262
0.1UF
T304
0.1UF
C265
R253
10K
C202
0.1UF
R227
R249
10K
T181
4
VDD0
VDD1
14
167
VDD10
VDD11
177
207
VDD12
24
VDD2
VDD3
34
44
VDD4
VDD5
59
122
VDD6
VDD7
137
147
VDD8
VDD9
157
236
WT*
10K
201
TCK
TDI
199
198
TDO
TEA*
154
TLBSYNC*
233
TMS
200
202
TRST*
TS*
149
197
TSIZ0
TSIZ1
196
195
TSIZ2
191
TT0
TT1
190
185
TT2
TT3
184
180
TT5
96
OVDD9
PLL_CFG0
213
211
PLL_CFG1
PLL_CFG2
210
208
PLL_CFG3
235
QACK*
QREQ*
31
RSRV*
232
SMI*
187
189
SRESET*
SYSCLK
212
TA*
155
234
TBEN
TBST*
192
TC0
224
223
TC1
OVDD14
138
OVDD15
148
OVDD16
173
183
OVDD17
OVDD18
194
222
OVDD19
OVDD2
35
OVDD20
229
240
OVDD21
163
OVDD22
45
OVDD3
OVDD4
54
61
OVDD5
OVDD6
70
79
OVDD7
OVDD8
88
OGND20
220
228
OGND21
OGND22
238
43
OGND3
OGND4
53
60
OGND5
OGND6
69
77
OGND7
OGND8
86
95
OGND9
OVDD0
10
20
OVDD1
OVDD10
104
112
OVDD11
OVDD12
121
128
OVDD13
203
L2_TSTCLK*
205
LSSD_MODE*
186
MCP*
OGND0
8
18
OGND1
OGND10
103
111
OGND11
OGND12
120
127
OGND13
OGND14
136
146
OGND15
OGND16
161
171
OGND17
OGND18
181
193
OGND19
OGND2
33
162
GND10
GND11
172
182
GND12
GND13
206
239
GND14
29
GND2
GND3
39
49
GND4
GND5
65
116
GND6
GND7
132
142
GND8
GND9
152
HRESET*
214
188
INT*
L1_TSTCLK*
204
DL6
133
131
DL7
DL8
130
129
DL9
DP0
38
40
DP1
DP2
41
42
DP3
DP4
46
47
DP6
DP7
48
217
DPE*
156
DRTRY*
GBL*
1
9
GND0
GND1
19
DL2
140
DL20
102
101
DL21
DL22
100
51
DL23
DL24
52
55
DL25
DL26
56
57
DL27
DL28
58
62
DL29
139
DL3
DL30
63
64
DL31
DL4
135
134
DL5
99
DH6
DH7
98
97
DH8
DH9
94
DL0
143
141
DL1
DL10
126
125
DL11
DL12
124
123
DL13
DL14
119
118
DL15
DL16
117
107
DL17
DL18
106
105
DL19
113
DH2
81
DH20
DH21
80
78
DH22
DH23
76
75
DH24
DH25
74
73
DH26
DH27
72
71
DH28
DH29
68
DH3
110
67
DH30
DH31
66
109
DH4
DH5
108
145
DBB*
DBDIS*
153
26
DBG*
DBWO*
25
115
DH0
DH1
114
93
DH10
DH11
92
91
DH12
DH13
90
89
DH14
DH15
87
85
DH16
DH17
84
83
DH18
DH19
82
36
ABB*
AP0
231
AP1
230
AP2
227
226
AP3
APE
218
ARTRY*
32
AVDD
209
BG*
27
219
BR*
CI*
237
CKSTP_IN*
215
216
CKSTP_OUT*
CLK_OUT
221
225
CSE0
CSE1
150
159
A24
A25
22
A26
158
A27
23
A28
151
A29
30
A3
3
A30
144
A31
37
A4
176
A5
5
A6
175
A7
6
A8
174
A9
7
28
AACK*
A1
2
A10
170
A11
11
A12
169
A13
12
A14
168
A15
13
A16
166
A17
15
A18
165
A19
16
A2
178
A20
164
A21
17
A22
160
A23
21
10PF
C240
0.1UF
C210
U26
MPE603E
A0
179
T292
10K
R240
VCC
33
R224
10K
R241
0.1UF
C237 C268
0.1UF
VCC
R252
10K
0.1UF
C205
U28
MC33269DT
1
GND
IN
32
OUT
C258
0.1UF
T199
VCC
10K
R261
R207
33
33
R205
T219
RA33
RA9
12
34
56
78
T174
T203
T163
T202
T306
T308
LF7
FILTER_22NF
123
T313
R239
10K
T171
10K
R244
0.1UF
C267
T167
RA7
RA33
12
34
56
78
0.1UF
C201
T214
RA12
RA33
12
34
56
78
C264
0.1UF
T195
C204
0.1UF
T209
T296 T205
T191
T197
8
C197
0.1UF
T331
MC33269DT
U33
GND
1
3
IN OUT
2
RA33
RA15
12
34
56
7
R206
10K
R211
10K
R214
VCC
0.1UF
C207
10K
T284
RA33
RA2
12
34
56
78
T190
T162
T166
T305
T302
T321
C221
10PF
T170
T222
0.1UF
C203
T172
0.1UF
C220
T316
100R217
T169
T221
T178
T187
VCC
VCC
T335
T194
T252
T201
RA33
RA13
12
34
56
78
T173
6
78
RA33
RA4
12
34
56
78
2
34
56
78
RA1
RA33
12
34
5
34
56
78
10K
R251
RA3
RA33
1
2
3
T319
T165
RA33
RA11
12
R235 100
0.1UF
C263
LF13
FILTER_22NF
1
T207
R210
10K
10PF
C222
T216
T189
T307
VCC
T295
R223
10K
10K
R226
T285
C219
0.1UF
T164
VCC
T177
T168
10K
R228
T183
C206
0.1UF
T291
T198
T298
T299
VCC
2.4K
R248
T329
T192
C225
0.1UF
8 T204
T196
VCC
T336
T220
T318
T309
RA14
RA33
12
34
56
7
8
T317
C223
10PF
C200
0.1UF
T223
RA33
RA16
12
34
56
7
T312
T293
10PF
C239
T320
T107
T303
T294
T212
2
34
56
78
0.1UF
C257
10K
R212
T215
RA6
RA33
1
R243 180
T176
T310
T288
T324
T322
T218
C211
0.1UF
10UF/16V
C58
VCC
VCC
R238 68
RA5
RA33
12
34
56
78
T175
VCC
T332
T315
VCC
VCC
T334
T330
T185
T200
T247
T314
0.1UF
C238
R218
10K
T161
0.1UF
C241
T311
VCC
T301
FILTER_22NF
LF11
123
T224
T289
FILTER_22NF
LF14
123
T210
R237
10K
R247 100
10K
R220
10K
R242
0.1UF
C224
T251
T300
T287
T246
R216
10K
R250
10K
R213
10K
C266
0.1UF0.1UF
C259
C209
33PF
T193
T325
T248
T333
4
56
78
R260
10K
C260
0.1UF0.1UF
C196
RA33
RA8
12
3
T184
T297
T179
DH(15)
DH(16)
DH(17)
DH(18)
DH(19)
DH(20)
DH(21)
DH(22)
DH(23)
DH(24)
DH(25)
DH(26)
DH(27)
DH(28)
DH(29)
DH(30)
DH(31)
180R245
A_R(30)
A_R(7)
A_R(5)
A_R(3)
A_R(1)
A_R(15)
A_R(13)
A_R(11)
A_R(9)
A_R(23)
A_R(21)
A_R(19)
A_R(17)
A_R(31)
A_R(29)
A_R(27)
A_R(25)
DH(0)
DH(1)
DH(2)
DH(3)
DH(4)
DH(5)
DH(6)
DH(7)
DH(8)
DH(9)
DH(10)
DH(11)
DH(12)
DH(13)
DH(14)
DH_R(26)
DH_R(27)
DH_R(28)
DH_R(29)
DH_R(3)
DH_R(30)
DH_R(31)
DH_R(4)
DH_R(5)
DH_R(6)
DH_R(7)
DH_R(8)
DH_R(9)
RST*
INT*
SYSCLK
TA*
A_R(0)
A_R(2)
A_R(4)
A_R(6)
A_R(8)
A_R(10)
A_R(12)
A_R(14)
A_R(16)
A_R(18)
A_R(20)
A_R(22)
A_R(24)
A_R(26)
A_R(28)
DH_R(29)
DH_R(28)
DH_R(0:31)
DH(0:31)
TT1
TBST*
BG*
AACK*
TSIZ0
TSIZ1
TSIZ2
TS*
DBB*
DH_R(0)
DH_R(1)
DH_R(10)
DH_R(11)
DH_R(12)
DH_R(13)
DH_R(14)
DH_R(15)
DH_R(16)
DH_R(17)
DH_R(18)
DH_R(19)
DH_R(2)
DH_R(20)
DH_R(21)
DH_R(22)
DH_R(23)
DH_R(24)
DH_R(25)
A_R(31)
A_R(0:31)
DH_R(27)
DH_R(26)
DH_R(25)
DH_R(24)
DH_R(23)
DH_R(22)
DH_R(21)
DH_R(20)
DH_R(19)
DH_R(18)
DH_R(17)
DH_R(16)
DH_R(15)
DH_R(14)
DH_R(13)
DH_R(12)
DH_R(11)
DH_R(10)
DH_R(9)
DH_R(8)
DH_R(7)
DH_R(6)
DH_R(5)
DH_R(4)
DH_R(3)
DH_R(2)
DH_R(1)
DH_R(0)
DH_R(31)
DH_R(30)
A(2)
A(0)
A_R(1)
A_R(2)
A_R(3)
A_R(4)
A_R(5)
A_R(6)
A_R(7)
A_R(8)
A_R(9)
A_R(10)
A_R(11)
A_R(12)
A_R(13)
A_R(14)
A_R(15)
A_R(16)
A_R(17)
A_R(18)
A_R(19)
A_R(20)
A_R(21)
A_R(22)
A_R(23)
A_R(24)
A_R(25)
A_R(26)
A_R(27)
A_R(28)
A_R(29)
A_R(30)
A_R(0)
A(0:31)
A(23)
A(19)
A(31)
A(29)
A(27)
A(25)
A(21)
A(17)
A(15)
A(13)
A(11)
A(9)
A(7)
A(5)
A(3)
A(1)
A(30)
A(28)
A(26)
A(24)
A(22)
A(20)
A(18)
A(16)
A(14)
A(12)
A(10)
A(8)
A(6)
A(4)