Electric System
EL-23
Instrument assembly and disassembly
Before disassembling the instrument, pull out needle 1, and then
loosen two screws 2.
When disassembling the printed-circuit board; pull it out directly
after welding off two wires 9(the printed board and blade connector are
directly connected together through a spring blade socket on the board).
Generally, do not disassemble the unit core. If it has to be disassem-
bled, weld off both the upper and the lower hairsprings, and the conduc-
tive blade at first so as not to damage the hairsprings In addition, do not
break the coil output wire.
1.Needle 2.Screw 3.Dial 4.Light guiding glass
5.Printed circuit-board 6.Connection wire 7.Bracket
8.Blade connector 9.Base
Trouble analysis
Trouble Case Repair
The instrument doesn't
work
Circuit broke
Sensor damaged
Instrument burnt out
Check wire connection and connector with
socket's contact
Replace sensor
Replace instrument
Needle shakes abnor-
mally
Wire connection is not good
Integrated body damaged
Check wire connection
Replace integrated body
Needle clicked There's foreign objects in the core Remove foreign objects
Needle doesn't return
to zero
Needle slacked
Core is clicked by foreign objects
Press the needle firmly and turn to zero
Remove foreign objects
To Next Page
Loading...