VI-11
4.
TROUBLESHOOTING OF MALFUNCTIONS
M-1 No DC power supplied
Possible cause
Step
Check
Result
Remedy
PCBs
1
Does any PCB have the short circuit between
+24V and 0V, +5V and 0V or +24V and +5V?
Yes
Replace the PCB having
the short circuit.
Low-voltage
power supply
PCB
2
Is the voltage of P101-8 in the low-voltage
power supply PCB connector 0V?
Yes
Replace the low-voltage
power supply PCB assy.
Main PCB
LV harness
DC fan motor
No
Replace the main PCB
assy, the LV harness or
the DC fan motor.
M-2 Malfunction of LCD display on the control panel.
Possible cause
Step
Check
Result
Remedy
LCD module
1
Dose the voltage of the following signals vary
to 5V or 0V when the LCD displays are
Yes
Replace the control panel
unit.
Control panel
PCB
Switch flat cable
Main PCB
changed through switch operations?
(Check following signals using the digital
memory scope with the trigger function for
this check)
No
Replace the main PCB
assy, the switch flat cable
or the control panel unit.
M-3 Malfunction of control panel LED lamps
.
Possible cause
Step
Check
Result
Remedy
LED lamps
1
Dose the voltage of the following signals stay
0V while the "04 SELF TEST" is displayed
Yes
Replace the control panel
unit.
Control panel
PCB
Switch flat cable
Main PCB
after switching the power on and stay 5V for
about 0.5 seconds after the message goes
off?
(Do the LED lamps turn on and off in response
to the signal levels of 0V and 5V?)
No
Replace the main PCB
assy or the switch flat
cable.
Panel PCB
−
P1-14
−
P1-10
−
P1-16
−
P1-12
−
P1-6
−
P1-8
−
P2-4
−
P2-3
−
P2-2
−
P2-1
−
P2-11
−
P2-9
Main PCB
P1-14
P1-10
P1-16
P1-12
P1-6
P1-8
LCD
−
7
−
8
−
9
−
10
−
4
−
6
Signal
PAD4
PAD5
PAD6
PAD7
LCDRS
LCDE
Panel PCB
−
P1-1
−
P1-4
−
P1-3
−
P1-2
Main PCB
P1-1
P1-4
P1-3
P1-2
Signal
LED1(ON LINE)
LED2(READY)
LED3(DATA)
LED4(ALARM)
Summary of Contents for HL-2060
Page 1: ...MECHANICS ELECTRONICS SERVICE MANUAL LASER PRINTER ...
Page 41: ...III 8 A B F C D E 1 E 2 E 3 E 4 E 5 F Figure 3 7 Paper Feed Size SW PCB Circuit ...
Page 129: ...VII 16 Test for memory MEMORY DISPLAY MEMORY DEBUG MEMORY TEST exit MENU ...
Page 137: ...Appendix A 3 Main PCB Circuitry Diagram 1 7 CODE UK4058000 B512006 CIR 1 7 NAME A 3 ...
Page 138: ...Appendix A 4 Main PCB Circuitry Diagram 2 7 CODE UK4058000 B512006 CIR 2 7 NAME A 4 ...
Page 139: ...Appendix A 5 Main PCB Circuitry Diagram 3 7 CODE UK4058000 B512006 CIR 3 7 NAME A 5 ...
Page 140: ...Appendix A 6 Main PCB Circuitry Diagram 4 7 CODE UK4058000 B512006 CIR 4 7 NAME A 6 ...
Page 141: ...Appendix A 7 Main PCB Circuitry Diagram 5 7 CODE UK4058000 B512006 CIR 5 7 NAME A 7 ...
Page 142: ...Appendix A 8 Main PCB Circuitry Diagram 6 7 CODE UK4058000 B512006 CIR 6 7 NAME A 8 ...
Page 143: ...Appendix A 9 Main PCB Circuitry Diagram 7 7 CODE UK4058000 B512006 CIR 7 7 NAME A 9 ...
Page 144: ...Appendix A 10 Control Panel PCB Circuitry Diagram 1 1 CODE UK4077000 B512005 CIR NAME A 10 ...
Page 145: ...Appendix A 11 Laser LD PCB Circuitry Diagram 1 1 CODE UK3253000 B48K253 CIR NAME A 11 ...
Page 147: ...June 98 54T046NE0 HL2060 ...