III-9
3. DISPLAY
CIRCUIT
3.1 Outline
The control panel of this printer has four LED lamps, one LCD display, and eight
switches.
The control panel is connected to the Main PCB and its functions are as follows:
(1)
The LCD shows the printer status and error message in alpha-numeric characters.
(2)
The LED lamps indicate the operating conditions of the printer.
(3)
The printing mode and LCD brightness can be changed by switches.
Main PCB
LCD
PAD4-PAD7
LCDE, LCDRS
LED4 (ONLINE)
LED5 (ONLINE)
LED2 (DATA)
SW1 (FORMFEED)
SW4 (SEL)
SW2 (UP)
SW5 (FONT)
SW3 (DOWN)
SW6 (SET)
LED1 (READY)
LED3 (ALARM)
SW8 (CONTINUE)
SW7 (MODE)
Figure 3.8 Display Circuit
3.2 Operation
Indicators on the control panel (LED lamps and LCD) are controlled by the video
controller circuit.
All the switch signals are input to the video controller circuit.
Signals Descriptions:
LED1 - LED4
On-off control for the respective LED lamps.
Illuminating when Low and extinguished when High.
PAD4 - PAD7 LCD control signal.
LCDRS
A signal to distinguish PAD4 - PAD7 into command and data.
LCDE
A signal to start the operation.
SW1 - SW8
Input signals from the switches.
Going Low when each switch is pressed.
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 ...