UX-B20U/UX-B20C/B25C
2 – 1
FAXUX-B20U/UX-B20C/B25CService ManualService ManualMarketE
CHAPTER 2. ADJUSTMENTS
[1] Adjustments
1. General
Since the following adjustments and settings are provided for this
model, make adjustments and/or setup as necessary.
2. 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.
2.1. Output voltage settings
3. IC protectors replacement
ICPs (IC Protectors) are installed to protect the motor driver circuit.
ICPs protect various ICs and electronic circuits from an overcurrent
condition.
The location of ICPs are shown below:
1) FU100 (KAB5002) is installed in order to protect IC's from an
overcurrent generated in the motor drive circuit. If FU100 is open,
replace it with a new one.
2) FU101 (KAB3202) is installed in order to protect IC's from an
overcurrent generated in the motor drive circuit. If FU101 is open,
replace it with a new one.
4. Settings
4.1. Dial mode selector
DIAL mode (Soft Switch No. SW-B4 Data No. 3)
5. Volume adjustments
You can adjust the volume of the speaker, handset, and ringer using
the UP and DOWN arrow keys.
5.1. Speaker
5.2. Handset
5.3. Ringer
Output Voltage limits
+5V 4.75V ~ 5.25V
+30V 27.0V ~ 33.0V
1 +30V
2 +30V
3MG
4MG
5DG
6DG
Connector
No. CNPW
Pin No.
7
8
+5V
+5V
CNPW
CNCRMT
CNFDMT
CNHEAD1
CNHEAD2
CNPN
CNBKL
CONTROL PWB
CNSP
CNCIS
CNPRG
CNLIU
CNLIU
18
CNPW
POWER SUPPLY PWB
LIU PWB
81
CNBKL
FU100
FU101
CNPW
CNCRMT
CNFDMT
CNHEAD1
CNHEAD2
CNPN
CNBKL
CONTROL PWB
(TOP SIDE)
CNSP
CNCIS
CNPRG
CNLIU
(step 1) Select "OPTION SETTING".
KEY : FUNCTION
DISPLAY: OPTION SETTING FINE PRIORITY
(step 2) Select "DIAL MODE".
KEY: Push until DIAL MODE is
indicated because the number of
's changes by the model.
DISPLAY: DIAL MODE 1=TONE, 2=PULSE
(step 3) Select, using "1" or "2".
KEY: 1
DISPLAY: TONE SELECTED
KEY: 2
DISPLAY: PULSE SELECTED
(step 4) End, using the "STOP" key.
KEY:
1
Press .
2
Press or to select the
desired vo lume le vel.
• Press again to turn off the speaker.
Display:
SPEAKER: HIGH
SPEAKER: MIDDLE
SPEAKER: LOW
1
Press or to select the
desired vo lume le vel.
(Make sure has not been pressed,
the handset is not lifted, and a
document is not loaded in the feeder.)
• The ringer will ring once at the selected
level.
2
If you selected RINGER: OFF OK ? to
turn off the ringer , press .
START/
MEMORY
Display:
RINGER: HIGH
RINGER: MIDDLE
RINGER: LOW
RINGER: OFF OK ?
1
When talking thr ough the handset,
press or to select the
desired volume le vel.
•
Note: The volume reverts to MIDDLE
each time you replace the handset.
Display:
RECEIVER: HIGH
RECEIVER: MIDDLE
RECEIVER: LOW
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