7-23
15
Buzzer does not sound.
a. Defective buzzer circuit.
Problem Check
Item
Cause Remedy
Repair
See
Section
Are 4 kHz pulses output
from DV0 (Pin 20) on main
CPU#3?
Defective main
CPU#3.
Replace Main PCB
assy.
Replace
CPU#3.
Are correct voltages applied
across buzzer BZ1?
Defective resistors
R36 and R69.
Replace Main PCB
assy.
Replace R36
and R69.
a. Defective
buzzer circuit
Buzzer BZ1 does not
sound?
Defective buzzer BZ1.
Replace Main PCB
assy.
Replace BZ1.
3.3.3
3.3.4
3.3.5
3.4.2
3.5.1
Summary of Contents for LX-1200
Page 1: ...SERVICE MANUAL MODEL LX 1200 LX 300 ...
Page 2: ...COOL LAMINATOR SERVICE MANUAL MODEL LX 1200 LX 300 ...
Page 5: ...Chapter 1 SPECIFICATIONS ...
Page 9: ...Chapter 2 MECHANISMS ...
Page 20: ...Chapter 3 DISASSEMBLY PROCEDURES ...
Page 58: ...Chapter 4 ASSEMBLY PROCEDURES ...
Page 105: ...Chapter 5 ELECTRONIC CONTROLLERS ...
Page 127: ...Chapter 6 MAINTENANCE ...
Page 149: ...Chapter 7 TROUBLESHOOTING ...