Sekonic LITEMASTER PRO - Troubleshooting Guide

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10. Troubleshooting
Item
No.
Malfunction
Content
Cause Response
1 No LCD display
(all or a portion)
a) Battery has not been inserted Insert battery
b) Battery poles are reversed Insert battery properly
c) Low battery capacity Replace battery
d) Poor electrode spring contact Replace PCB / 3 Assy
e) Electrode spring solder shear-off Re-solder
f) LCD damage Replace LCD
g) Connector position slippage Re-connect
h) Poor Wire Harness / 3 contact Re-connect Wire Harness / 3 or Replace
Wire Harness / 3
i) Electronic circuit defect Replace PCB / 1 Assy, PCB / 2 Assy or
PCB / 3 Assy
2
Touch panel
does not function
a) LCD damage Replace LCD
b) Connector position slippage Re-connect
c) Electronic circuit defect Replace PCB / 1 Assy
3 Reacted with a
position pressing the
touch panel shifted
position
a) Displacement by adjusting the
user
Adjustment Touch panel
b) Touch panel secular change Adjustment Touch panel
c) Touch panel damage Replace LCD
4 Measurement is not
possible when light
measuring button is
pressed
a) The measuring button catches
and cannot be switched on or off.
Repair the button
b) The measurement button
damage.
Replace PCB / 2 Assy
c) Electronic circuit defect Replace PCB / 1 Assy or PCB / 2 Assy
5 Flash is not triggered
a) Broken connection in pulse
transformer
Replace PCB / 1 Assy
b) Electronic circuit defect Replace PCB / 1 Assy
c) Defective synchro terminal
Assy contact
Replace the synchro terminal assembly
d) Synchro terminal Assy lead wire
broken connection
Replace lead wire
e) Defective soldering of synchro
terminal Assy lead wire
Re-solder
6 Flash is not triggered
in flash radio
triggering mode
a) PCB / 4 damage Replace PCB / 4
b) Defective soldering of
PCB / 4 terminal
Re-solder
c) Electronic circuit defect Replace PCB / 1 Assy or PCB / 2 Assy
7 Display values are
erratic when using
optional accessories
for light receiving
section
a) Defective light receiving section
contact
Replace the light receiving section option
b) Optics Main Frame Assy lead
wire broken connection
Replace Optics Main Frame Assy
c) Electronic circuit defect Replace PCB / 1 Assy
8 Other switches /
buttons do not
function
a) Switch / button damage Replace the switch / button
b) Electronic circuit defect Replace PCB / 1 Assy, PCB / 2 Assy or
PCB / 3 Assy
9
USB Connect Failed
a) USB Cable damage Replace USB Cable
b) Electronic circuit defect Replace PCB / 1 Assy