UES-40
Troubleshooting 2-4 ISSUE4
There is a
response when
the output
switch is
pressed, but it
cannot be
treated.
No output
1243—5
Converter – Oscillation board (J1)
Front port
part
—
Monitor board (J3) – Oscillation board (J7)
Monitor board (J3) – Oscillation board (J3)
Oscillation board (J4) – Control board (J5)
Monitor board (J7) – Relay board (J2)
Monitor board (J5) – Relay board (J1)
Monitor board (J16) – Control board (J1)
Low output
2143—5
Converter – Oscillation board (J5)
Front port
part
—Oscillation board (J4) – Control board (J5)
Monitor board (J16) – Control board (J1)
High output
2143—5
Oscillation board (J4) – Control board (J5)
——
Monitor board (J16) – Control board (J1)
All normal
—————— — —
• Active cord disconnected
• Incorrect use
Cannot be set
up
Panel-switch prob-
lem
7-segment LED
problem (cannot
display correctly)
— — — 2 1 — Control board (J2) – Panel sheet — —
Switch unrespon-
sive
— — — 2 1 — Control board (J2) – Panel shee — —
LEDs remain unlit. — — — 2 1 — Control board (J2) – Panel sheet — —
Pressing the
switch once gives
a prolonged
response
— — — 2 1 — Control board (J2) – Panel sheet — —
No sound — 1 — 2 — —
Monitor board (J2) – Speaker
Speaker —
Monitor board (J16) – Control board (J1)
Active cord
(for saline) is
not detected.
Even with the cord
attached, saline
mode is unavail-
able.
—132——
Monitor board (J5) – Relay board (J1)
Front port
part
Active cord (for saline) connector is
defined.
Monitor board (J16) – Control board (J1)
Cord is not
attached, but unit
is in saline mode.
—132—— —
Front port
part
—
Removing the cord
does not restore
the mode.
—132—— —
Front port
part
—
Problem
Parts That Might Have Caused the Problem
Oscillation
board
Monitor
board
Relay
board
Control
board
Panel
sheet
Converter Harnesses Other Other than main unit
(Continued next page)
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