Chapter 2. Adjustments; Adjustments - Sharp UX-177 Service Manual

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
MJI MJ2
CNSP
CNTH
CNLIUA
CNLIUA
CNLIUB CNLIUB
TEL/LIU
Output Voltage limits
4.75V ∼ 5.25V
+5V
23.3V ∼ 24.7V
+24V
2. IC protectors
replacement
ICPs (IC Protectors) are installed to protect the motor driver circuit
and the plunger drive circuit. ICPs protect various ICs and electronic
circuits from an overcurrent condition.
The location of ICPs are shown below:
CNPS
CNLIUB
CNCCD
CNMT
CNCSW CNCUT
POWER
SUPPLY
CNPN
CNMT
CNPW
CNLED
CNCSW
CONTROL
CNCCD
Connector
No. CNPW
Pin No.
1 DG
2 DG
3 +5V
4 VTH-ON
5 MG
6 MG
7 +24V
8 VTH
9 VTH
CNLIUA
CNTH
CNPW
FU1
CNPN
CNLED
(1) FU1 (ICP-N20) is installed in order to protect IC's from an over-
current generated in the motor drive circuit. If FU1 is open, replace
it with a new one.
3. Settings
(1) Dial mode selector
DIAL mode (Soft Switch No. SWB4 DATA No. 3)
(step 1) Select "OPTION SETTING".
KEY : FUNCTION
DISPLAY: OPTION SETTING
(step 2) Select "DIAL MODE".
KEY:
# #
DISPLAY: DIAL MODE
(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:
2 – 1
4
PRESS
Cursor
When initially registering,
the mode shows 1=TONE.
When registering again, the
# # # #
#
mode which was registered
formerly is shown.
1=TONE, 2=PULSE
STOP
UX-177H
OR #