Chapter 2. Adjustments; Adjustments - Sharp FO 4400 - B/W Laser - All-in-One 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
POWER
SUPPLY
PWB
1
1
CN5
12
8
1
CN1
HIGH VOLTAGE 10
VR51
PWB
[DO NOT TOUCH!]
Output Voltage limits
+5V MAIN 4.947V~5.25V
+24V SUB 23.04V~24.96V
Connector CN4
No.
Pin No. CN1
1 11 +5V
2 10 CH LREM
3 9 T VR
4 8 T MON V
5 7 T MON I
6 6 B VR
7 5 V REM
8 4 C MON
9 3 MG
10 2 +24V
CONTROL PWB
CN1
CNPRT1
CNPW1
1 12 1 30
1 30
8 CN1
10
CN7
CN4 PRINTER PWB
1
1
Fig. 1
Note
CN5 7pin 8pin
CN5 1pin 2pin
Connector CN5
No.
Pin No. CNPW1
1 +24V SUB
2 MG
3 MG
4 MG
5 +24V MAIN
6 +24V MAIN
7 +5V MAIN
8 DG
9 DG
10 DG
11 +5V MAIN
12 +5V MAIN
Connector CN1
No.
Pin No.
1 +24V MAIN
2 MG
3 DG
4 DG
5 +5V MAIN
6 +5V MAIN
7 HEATER ON
8 H-RELAY OFF
2. IC protectors replacement
ICPs (IC Protectors) are installed to protect the CIS unit, panel PWB
unit, TX motor drive circuit and verification stamp drive circuit. ICPs pro-
tect various ICs and electronic circuits from an overcurrent condition.
The location of ICPs are shown below:
1
CNSP1
2
1
CNSEN1
F5
8
F2
28
F1
CNCIS1
CNPN1
10 1
27
(1) F1 (ICP-S0.5) F2 (ICP-S1.0) is installed in order to protect IC's from
an overcurrent generated in the CIS unit. If F1 or F2 are open,
replace it with a new one.
(2) F5 (ICP-S1.0) is installed in order to protect IC's from an overcurrent
generated in the panel PWB unit. If F5 is open, replace it with a
new one.
(3) F100 (ICP-S1.0) is installed in order to protect IC's from an
overcurrent generated in the verification stamp drive circuit. If F100
is open, replace it with a new one.
(4) F101 (ICP-S1.8) is installed in order to protect IC's from an
overcurrent generated in the TX motor drive circuit. If F101 is open,
replace it with a new one.
In addition to the replacement of F1, F2, F5, F100 and F101, the
factor causing F1, F2, F5, F100 and F101 to open must also be
repaired. If not, F1, F2, F5, F100 and F101 will open again.
Replacement parts
ICP-S0.5 (Sharp code: VHViCPS05//-1)
ICP-S1.0 (Sharp code: VHViCPS10//-1)
ICP-S1.8 (Sharp code: VHViCPS18//-1)
3. Settings
(1) Dial mode selector
OPTION SETTING: DIAL MODE (Soft Switch No. SW2 DATA No. 1)
Use this to set the fax machine to the type of telephone line you are on.
• The factory setting is "TONE".
(step 1) Select "OPTIONAL SETTING".
KEY:
DISPLAY:
(step 2) Select "DIAL MODE". (step 2) Select "DIAL MODE".
KEY: KEY:
CN7
DISPLAY: DISPLAY:
(step 3) Select, using "1" or "2".
KEY:
DISPLAY: TONE SELECTED
KEY:
DISPLAY:
(step 4) End, using the "STOP" key.
KEY:
2 – 1
CNLIU1
CONTROL PWB
(TOP SIDE)
F100
F101
2
IC3
2 1 4 1
1
F1/F2/F5:Top side
CNSTP1 CNTXM1 F100/F101:Bottom side
Fig. 2
MENU 4
4:OPTIONAL SETTING
ENTER #(01-36, , )
2 2
2 2
22: DIAL MODE 22: DIAL MODE
1=TONE, 2=PULSE
1
2
PULSE SELECTED
STOP
FO-4400U
FO-CS1
12 1
CNPW1