Troubleshooting Repair Information
4 - 12 0070-10-0591-01 Trio™ Service Manual
Operation, Recording
MESSAGE/PROBLEM REASON SOLUTION
Keys or Navigator™ knob
disabled
Keypad or Navigator knob is
damaged
Replace keypad or Navigator
knob
Keypad cable is damaged Replace or repair keypad
cable
Sound is distorted or mute Keypad failure Replace keypad
Speaker or cable failure Replace speaker or cable
Recorder will not print Recorder has no paper or roller
lever is not pressed down
Install paper and press down
the roller lever
Recorder failure Replace the recorder
Recorder cable is damaged Replace or repair the
recorder cable
Record paper skews Bad recorder paper installation
or positioning
Adjust the installation of
recorder paper
Power Board Failure
MESSAGE/PROBLEM REASON SOLUTION
Fuse blows upon power-on Short-circuit in power supply or
other module
Replace module or PCS
Check after power-on
Fuse blows when all loads are
disconnected
Power Supply failure Replace Power Supply
Fuse blows after connecting a
specific PCB
PCB may be defective Replace PCB
Indicators of power and main
control board illuminated,
however, the fan does not run
and the keypad indicator does
not illuminate
+12V DC power is damaged Replace the power supply
PCB
Indicators of power and main
control board do not illuminate,
however, the fan runs normally
and the keypad indicator
illuminates
+5V DC power is damaged Replace the power supply
PCB
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