Sharp FO-475TH - Manual (Page 10)

UX-258TH
FO-475TH
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
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
(1) FU100 (ICP-S07) is installed in order to protect IC’s from an over-
current generated in the motor drive circuit. If FU100 is open, replace
it with a new one.
3. Settings
(1) Dial mode selector
DIAL mode (Soft Switch No. SWB4 DATA No. 3)
Output Voltage limits
+5V 4.75V
∼
5.25V
+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:
1 DG
2 +5V
3 VTH-ON
4 MG
5 MG
6 MG
7 +24V
8 VTH
9 VTH
10 VTH
Connector
No. CNPW
Pin No.
2 – 1
TEL/LIU PWB POWER SUPPLY PWB
CNLIU
CNLIUA
CN2
CNPW
CONTROL PWB
CONTROL PWB
(TOP SIDE)
CNLIUA CNPW
FU100
4. Method of release of starting lock up by Battery
Reset
(1) Summary
There is a possibility of release of the lock up by reset the signal BATRST
of CPU (FC100), if it lock up when you turn on the power of the set in
UX-258 series. We inform you of the method of release.
(2) Contents
When you turn on the power of the set without EPROM by your mistake,
if you turn off the power after, turn on the power with EPROM again, the
set don’t start.
In this case, before you judge the cpu (FC100) is wrong, you need to
confirm the release of the lock up by reset the signal BATRST. and
unknown origin in the same way.
Method of the reset of signal BATRST
Short the between leads of the capacitor C5 on the control PWB,
X2961-81 in the state of POWER OFF.
(step 1) Select "OPTION SETTING".
KEY : FUNCTION 4
DISPLAY: OPTION SETTING PRESS OR #
(step 2) Select "DIAL MODE".
KEY:
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:
Cursor
When initially registering,
the mode shows 1=TONE.
When registering again, the
mode which was registered
formerly is shown.
STOP
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