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UX-A450DE/IT/H
NX-A550DE/IT/FO-A650IT
CHAPTER 2. ADJUSTMENTS
[1] Adjustments
General
Since the following adjustments and settings are provided for this model,
make adjustments and/or setup as necessary.
1. Adjustments of output voltage (FACTORY ONLY)
1. Install the power supply unit in the machine.
2. Set the recording paper and document.
3. When the document is loaded, power is supplied to the output lines.
Confirm that outputs are within the limits below.
Output voltage settings
POWER
SUPPLY
PWB
(BOTTOM SIDE)
CNPS
CNPW
CNPN
Output
Voltage limits
+5V
4.25V ~ 5.75V
+24V
23.3V ~ 24.7V
2. IC protectors replacement
ICPs (IC Protectors) are installed to protect the motor driver circuit.
ICPs protect various ICs and electronic circuits from an overcurrent con-
dition.
The location of ICPs are shown below:
CNLIUA
FU100
CONTROL PWB
(BOTTOM SIDE)
(1) FU100 (KAB2402) is installed in order to protect IC's from an over-
current generated in the motor drive circuit. If FU100 is open, re-
place it with a new one.
TEL/LIU PWB
(BOTTOM SIDE)
CNLIUA
CNLIUA
CNPRG
CNTH
CNMT
CONTROL
CNCSW
PWB
CNSP
(TOP SIDE)
CNCIS
Connector
No.
CNPW
Pin No.
1
+24V
2
+24V
3
MG
4
MG
5
DG
6
Vreg(+5V)
CNPW
3. Settings
(1) Dial mode selector
DIAL mode (Soft Switch No. SW-B4 DATA No. 3)
Setting is not required since the required mode is TONE ONLY.
4. Volume adjustment
You can adjust the volume of the speaker and ringer using the UP and
DOWN keys.
(1) Speaker
1. Press the SPEAKER key.
2. Press the UP or DOWN until the display shows the desired volume
level.
• Press SPEAKER key again to turn off the speaker.
(2) Ringer
1. Press the UP or DOWN key. (Make sure SPEAKER key has not been
pressed and a document is not loaded in the feeder.)
Display:
RINGER: HIGH
RINGER: MIDDLE
RINGER: LOW
RINGER OFF: OK?
2. If you selected RINGER OFF: OK?, press START/MEMORY key.
2 – 1
• The ringer will ring once at the
selected level, then the date
and time will reappear in the
display.
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