Chapter 2. Adjustments; Adjustments - Sharp FO-4650 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
CN5
12
1
POWER SUPPLY
8 1
PWB
CN1
Output Voltage limits
+5V MAIN 4.845V~5.355V
+5V SUB 4.845V~5.355V
+24V MAIN 23.04V~24.96V
+24V SUB 23.04V~24.96V
Connector CN4
No.
Pin No. CN1
1 11 +5V
2 10 HV C HL
3 9 T VR
4 8 T REM
5 7 T MON
6 6 B MON
7 5 B VR
8 4 C REM
9 3 C MON
10 2 MG
11 1 +24
CONTROL
PWB
1 12
CNPRT
CNPW
30
1
11
1 30
Voltage for adjust
CN1
1
CN4
PRINTER
PWB
–
IC2
8 1
VR1
CN7
+ Check point for voltage
1 11
CN1
HI VOLTAGE
PWB
–
Digital multi meter
Fig. 1
Connector CN5
No.
Pin No.
1 +24V SUB
2 MG
3 MG
4 MG
5 +24V MAIN
6 +24V MAIN
7 +5V SUB
8 DG
9 DG
10 DG
11 +5V MAIN
12 +5V MAIN
Connector CN1
No.
Pin No.
1 24 MAIN
2 MG
3 DG
4 5V MAIN
5 HEATER ON
6 FAN
7 FAN LOCK
8 H RELAY OFF
TOP VOID LABEL
2. IC protectors replacement
ICPs (IC Protectors) are installed to protect the TX motor drive circuit
and verification stamp drive circuit. ICPs protect various ICs and elec-
tronic circuits from an overcurrent condition.
The location of ICPs are shown below:
(1) F100 (ICPS10) is installed in order to protect IC's from and
IC2
overcurrent generated in the verification stamp drive circuit. If F100
is open, replace it with a new one.
VD
(2) F101 (ICPS18) 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 F101 and F100, the factor causing
F101 and F100 to open must also be repaired. If not, F101 and
+
F100 will open again.
Replacement parts
ICPS10 (Sharp code: VHViCPS10//-1)
ICPS18 (Sharp code: VHViCPS18//-1)
3. Settings
CNPW
(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 "OPTION SETTING".
KEY:
DISPLAY:
(step 2) Select "DIAL MODE".
KEY:
DISPLAY:
(step 3) Select, using "1" or "2".
CN7
KEY:
DISPLAY: TONE SELECTED
KEY:
DISPLAY:
(step 4) End, using the "STOP" key.
KEY:
STOP
2 – 1
ADJUST VOLTAGE LIST
Top Void Printer
Label (mm.) Fig. 2
5.5~6.9
7.0~8.9
9.0~10.9
11.0~12.9
13.0~14.9
Fig. 2
15.0~17.0
1 12
1 30
CNPW
CNPRT
27 25
CNOP
IC7
50 1
F101
F100
CNPN
CNTXM
CNSTP
1
1 4 1 2
Fig. 3
FUNCTION 4
4:OPTIONAL SETTING
ENTER #(01-34, ,#)
2 2
DIAL MODE 1=TONE, 2=PULSE
1
2
PULSE SELECTED
FO-4650U
Adjust Voltage
VR1 Fig. 1
4.42V
3.87V
3.14V
2.50V
1.86V
1.22V
1 9
CNLIU
CONTROL PWB
(BOTTOM SIDE)
1
CNSP
2
1
CNSEN
8
CNCIS
24
1 10
Cursor
When initially registering,
the mode shows 1=TONE.
When registering again, the
mode which was registered
formerly is shown.