Jadever JCL Service Manual

JADEVER SCALE CO., LTD - www.dongminhphat.com
18 JCL Service Manual - www.cantudong,com
LCD defective
After confirming that there is no broken board
line or short circuit of connection between
LCD and other conduction objects, please
directly replace LCD.
Component or part
defective
Please check CP19/LM2930 , then replace
the defective one.
Poor LCD
Display
U10(IC6554) related
circuit fault
Please check U10(IC6554) related circuit
fault, replacement is needed for the defective
one.
Component
LM2931,AD5530 or
4.9152M is defective
Replacement is required
Incorrect
weighing
Load cell Malfunction
Replacement is required
Q11 or Q8 defective
Please check / replace Q11 or Q8
Buzzer
does not work
BUZZER defective or
buzzer circuit fault
Replacement is required
Keypad or keypad circuit
fault
Check/replace keypad or keypad circuit.
CPU / CPU program
effective
Check/replace CPU
Keypad
dysfunction
Component 74LS139
defective
Check / replace component 74LS139
Memory
dysfunction
Component
24C02,R29,R30,R31 or
CP18 defective
Please check 24C02,R29,R30,R31and
CP18,then replace the defective components
Wrong setting
Please check /reset external device/ baud
rate/print mode(refer to 3-3)
RS-232 board defective
Please check/replace RS-232 board.
Bad connection between
RS-232 board and main
board
Please check/replace the wire connection
Messy code
occur in the
print out
copies
Defective in external
device
Maintenance/replacement is need.

Jadever JCL Specifications

General

Brand	Jadever
Model	JCL
Category	Scales
Language	English