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LASER PRINTER
ML-6000
QwikLaser 6000
SERVICE 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
8. Schematic Diagrams
8-1 Engine Controller)
+5V +5V
D504
1N4148 CN105
1
2
R516 SLCON2P
30K
+5V +5V 1/8 D505
1N4148
A(0:15)
AD(0:7) C15 C14
10NF 10NF
U2 500V 50V
A(0) 10 11 AD(0) MLC AXIAL
A0 O0
A(1) 9 12 AD(1)
A1 O1 U4
A(2) 8 13 AD(2)
A2 O2 U3
A(3) 7 15 AD(3) A(0) 19 2 AD(0)
A3 O3 Q1 D1 LDON
A(4) 6 16 AD(4) A(1) 18 3 AD(1)
A4 O4 Q2 D2 PMOTOR
A(5) 5 17 AD(5) A(2) 17 4 AD(2) A(15) 1 64
A5 O5 Q3 D3 P0.7_A15 VDD VDO
A(6) 4 18 AD(6) A(3) 16 5 AD(3) A(14) 2 43
A6 O6 Q4 D4 P0.6_A14 AVREF LREADY
A(7) 3 19 AD(7) A(4) 15 6 AD(4) A(13) 3
A7 O7 Q5 D5 P0.5_A13
A(8) 25 A(5) 14 7 AD(5) A(12) 4 +5V +5V +5V
A8 Q6 D6 P0.4_A12
A(9) 24 A(6) 13 8 AD(6) A(11) 5 41
A9 Q7 D7 P0.3_A11 P6.7
A(10) 21 A(7) 12 9 AD(7) A(10) 6 40 R33 R45 R34
A10 Q8 D8 P0.2_A10 P6.6
A(11) 23 +5V A(9) 7 27 1K 1K 1K
A11 P0.1_A9 P2.5
A(12) 2 +5V 20 A(8) 8 25 1/8 1/8 U205-2 1/8
A12 VCC P0.0_P8 P2.7
A(13) 26 28 C18 35 3 4
A13 VCC P6.1 PT_LAMP
A(14) 27 10NF 11 AD(0) 63
A14 CLK P1.0_AD0
C13 50V 10 1 AD(1) 62 10 74LS06
GND OC P1.1_AD1 P4.6 READY
A(15) 20 10NF R25 AD(2) 61 16
CE* P1.2_AD2 P4.0 CMSG
22 50V 74HCT574 330 AD(3) 60 17
OE* P1.3_AD3 P3.7 EBUSY
1 14 1/8 +5V AD(4) 59 18
VPP GND P1.4_AD5 P3.6 EMSG
AD(5) 58 19
P1.5_AD5 P3.5 PSYNC
27C256 R36 AD(6) 57 20 R422 100
P1.6_AD6 P3.4 CCLK
5.6K AD(7) 56 21
P1.7_AD7 P3.3 MP_CLUTCH
1/8 26 JS3
P2.6 VDI
BDCORE FB4 33 28 R27 220 1/8
P2.0 P2.4 HSYNC
BDCORE 31 29
P2.1 P2.3 PRINT
FB5 42 50
EA P5.5_ADC5
U6 NOT USED
18 2 AD(7) 52 13
PSIZE B1 A1 CLN P5.7_ADC7 P4.3
17 3 AD(6) JS1 D401 49 14
COVER B2 A2 P5.4_ADC4 P4.2
16 4 AD(5) 1N4148 48 15 C28 C39 C40 C38 C29 C27 C19
FEED B3 A3 P5.3_ADC3 P4.1 100PF 1NF 1NF 1NF 1NF 1NF 1NF
15 5 AD(4) 47
PEMPTY B4 A4 DCU_DATA P5.2_ADC2 50V 50V 50V 50V 50V 50V 50V
14 6 AD(3) 46 23
TONER B5 A5 DCU_CLK P5.1_ADC1 P3.1
13 7 AD(2) 45 24
EXIT B6 A6 THERM P5.0_ADC0 P3.0
+5V 12 8 AD(1) 22 51
MP_PAPER B7 A7 SCF_CLUTCH P3.2 P5.6_ADC6
11 9 AD(0) 39 37 R424 220 1/8
SCF_EMPTY B8 A8 SLEEP P6.5 P6.3 MOTOR_EA
R408 +5V 38 34 R425 220 1/8
R406 FUSER P6.4 P6.0 MOTOR_PB
U205-1 1K 3301/8 1 20 R426 220 1/8
DIR VCC MOTOR_PA
A(15) 1 2 1/8 19
*G
C401
CLUTCH
9
P4.7 XIN
54
10 10NF 11 53
GND SEL_CASSET P4.5 XOUT BIASPWM
74LS06 500V 12
MLC AXIAL P4.4 THVPWM
74HC245 30
SUPPLY P2.2 THVREAD
36
SCF_MOTOR P6.2 THVEA
44
AVSS MHV
+5V 55 32
RESET* VSS
KS88C4316 +5V
R56 R55 R46 R31
D7 12K 15K 1K 100
1N4148 R405
1/8 1/8 1/8 1/8
U5-2 X1 5.6K
5 1/8
Q1 7 R52 330 1/8
Q0
6 Q2
6.94407MHZ
C35 R53 R54 LM393 C34 C33 C20 C21 JS2
4.7UF 56K 47K 100NF 4.7UF R407 22PF 22PF
510 50V 50V
50V 1/8 1/8 50V 50V 1/8
FAN_E FB1
C402
BDCORE
+5V 100PF
50V
C405
10NF U205-5
50V 11 10
74LS06
U205-6
13 12
74LS06
Engine Controller (1/6)
+5V +5V +5V +24V +5V
CN2 R61 R60 R59
1 D228 D229 D230 D231 5.6K 5.6K 5.6K CN6
1N4148 1N4148 1N4148 1N4148
2 1/8 1/8 1/8 1
DCU_DATA
3 R282 100 1/8 2
DCU_CLK SEL_CASSET
4 R283 100 1/8 3
SCF_MOTOR
R284 100 1/8 4
SCF_CLUTCH
SLCON4P-DCU R285 100 1/8 5
SCF_EMPTY
C42 C41 6
1NF 1NF 7
50V 50V D224 D225 D226 D227 8
1N4148 1N4148 1N4148 1N4148
+5V
SLCON8P-SCF
CN5
1
EBUSY
2
3
EMSG
4
5
CCLK
6
PRINT
7 JS4
VDI
8
9
PSYNC
10
READY
11
HSYNC
12 +5V +5VT
13
14 R48
CMSG D233 CN103
15 2.2K
1N4148
16 1/8 1
17 R293 100 1/4 2
TONER
18 3
19 C22
20 1NF D232
1N4148 SLCON3P-TONER
21 50V
22
23
24
DLCON_24P-VIDEO
C32
100NF JS6
50V
+24VS1 +5VT +5VS +5V +5V +5V +5V +5V
+24VS1
C46 R28 R26 R51 R63 R42 CN7
5.6K 5.6K 5.6K 12K 1K 1
1/8 1/8 1/8 1/8 1/8 2
100NF R62 R8 3
CLN
50V 0.5 1
CN3 1/2 1/2 SLCON3P-CLN
11 U205-3
BD1
10 6 5 R29 100 1/8
BDCORE PMOTOR
9
8 74LS06
LREADY
7
6
HSYNC
5
4
3
LDON
2 JS5 U203-3 +5V
1 6 5
VDO
7407
SLCON11P
C11 C36 C231
C503 C26 C17 C16 C31 C30 C24 47UF 10NF 10NF
100UF 100NF 1NF 100PF 1NF 100PF 10NF 10V 50V 50V
50V 50V 50V 50V 50V 50V 50V
+5V
R517
33
1/2
CN10
1
2
C
SLCON2P-FAN
B
PT_LAMP
Q10
E KSC1008
Engine Controller (2/6)
R412
+24VS1 T204 30M
D210
ESJA57-04 BR
+18V +18V C209 1 10 1 HP1
R223 100NF SUPPLY
47K 50V R239
1/8 ZD204
R262 R234 2 3.3M
9.1K 86.6K 1/2 UZ33B
1/8 1/8 C220 C219 R226
100PF 470PF 3.3M ZD203
R224 R231 1N5274B
LM324 2KV 3KV 1/2
R269 R253 47K 390
2 R229
75K 27K 1/8 1/8 ZD205
U203-1 Q2 1 4 3.3M
1/8 1/8 Q0 UZ33B
1 2 3 Q1 1/2
BIASPWM
U201-1
7407 5 6 1 HP2
DEV
VR204 C229 C223 R222 C210 C
100NF 2.2NF D215 15K 33NF B Q204 TRANS10P R210
1N4148 KSD526
50V 500V 1/8 50V 3.3M
10KOHM
E 1/2
R212
R268 R230 3.3M
17.4K 10 1/2
1/8 1/2
R418 Q402 R419
+24VS1
10K 2SA1413 33K
1/8 1/8
E
C
R416
R413 2.2K
B
R415
33K 1/8
3.3K C
U203-4 1/8 C403
1/8 R417
9 8 B 100PF
SUPPLY 10K
2KV
Q403 1/8
7407 R414
KSC1008 E
1K
1/8
NOT USED
C204
+18V +24VS1 T202 470PF
3KV D201
ESJA57-04
C222 1 6 1 HP3
100NF R238
MHV
50V 100K
R258
1/8
180K 2
1/8
ESJA57-04
+5V R233 C404 C201