Home » Sharp Manuals » Multifunction Devices » Sharp FO IS125N » Manual Viewer

Sharp FO IS125N Service Manual - Page 19

IC Protectors Replacement, 5. Power Supply Unit Replacement, 6. Volume Adjustment - drivers

UPC - 074000034372

Add to My Manuals
Save this manual to your list of manuals

Page 19 highlights

4. IC Protectors Replacement ICPs (IC Protectors) are installed to protect the Optical (LSU) unit, Printer motor drive circuit, Solenoid drive circuit and Scanner motor drive circuit. ICPs protect various ICs and electronic circuits from an overcurrent condition. The location of ICPs are shown below: F300:Top side F500/F501/F600:Bottom side CNPOUT CNTNR CNPN CNPIN CNRTH CNLAN CNSP CNTEL CNCIS CNHV CONTROL PWB(TOP SIDE) CNLSR F300 CNPM F500 CNMM F600 CNTXM F501 CNFM CNSL CNLNJ CNPW 1) F300 (KAB5002 251) is installed in order to protect IC's from an overcurrent generated in the IC302 circuit. If F300 is open, replace it with a new one. 2) F500 (KAB2402 402) is installed in order to protect IC's from an overcurrent generated in the Printer motor drive circuit. If F500 is open, replace it with a new one. 3) F501 (KAB5002 321) is installed in order to protect IC's from an overcurrent generated in the Solenoid driver circuit. If F501 is open, replace it with a new one. 4) F600 (KAB3202 801) is installed in order to protect IC's from an overcurrent generated in the Scanner motor drive circuit. If F5 is open, replace it with a new one. Replacement parts KAB3202 801 (Sharp code: QFS-L1037YCZZ) KAB5002 251 (Sharp code: QFS-L2021XHZZ) KAB2402 402 (Sharp code: QFS-L2025XHZZ) KAB5002 321 (Sharp code: QPRTR2001XHZZ) 5. Power Supply Unit Replacement FO-IS125N [PRIMARY] F2 F1 [SECONDARY] 1 F101 CN3 T1 TRANSFORMER F301 1) F1 (K7135AS007): AC250V/10A is installed in order to protect overcurrent by heater circuit breakdown. 2) F2 (K7144AR005): HTM250V/4A is installed in order to protect overcurrent by primary circuit breakdown. 3) F101 (K7144AR005): HTM250V/4A is installed in order to protect overcurrent by breakdown of +24V line. 4) F301 (K7144AR002): HTM250V/2A is installed in order to protect overcurrent by breakdown of Ach line. Caution: Don't use fuse except for rating above. 6. Volume Adjustment You can adjust the volume of the speaker, handset, and ringer using the up and down arrow keys. 1. Speaker volume SPEAKER 1) Press . 2) Press or to select HIGH, MIDDLE, or LOW. • To turn off the speaker, press again. 2. Handset 1) When talking through the handset, press or to select HIGH, MIDDLE, or LOW. • Note: The volume reverts to MIDDLE each time you replace the handset. 3. Ringer 1) Press or to select HIGH, MIDDLE, LOW or SPEAKER OFF. (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. START 2) If you selected "OFF OK?" to turn off the ringer, press . 2 - 6

Section	Page
TopPage	1
GENERAL DESCRIPTION	2
[1] Caution	2
1. Laser caution	2
2. Life of consumable	2
3. Caution for Battery replacement	3
4. Precautions for using Lead-Free Solder	3
[2] Specifications	4
[3] Operation panel	6
[4] Transmittable documents	7
1. Document Sizes	7
2. Paper Thickness & Weight	7
3. Document Types	7
4. Cautions on Transmitting Documents	7
5. Automatic Document Feeder Capacity	7
6. Readable Width & Length	7
[5] Installation	8
1. Site selection	8
2. Connecting the handset	8
3. Attaching the tray	8
4. Connecting the power cord	9
5. Connecting the telephone line cord	9
6. Affixing the rapid key labels	9
7. Connecting the machine to your network	9
8. Installing the toner cartridge and drum cartridge	9
9. Resetting the drum counter	11
10. Manually resetting the toner counter	11
11. Loading printing paper	11
[6] Clearing paper jams	12
1. Clearing a jammed document	12
2. Clearing jammed printing paper	12
ADJUSTMENTS	14
[1] Adjustments	14
1. General description	14
2. Adjustments of output voltage (FACTORY ONLY)	14
3. High voltage power check	15
4. IC Protectors Replacement	19
5. Power Supply Unit Replacement	19
6. Volume Adjustment	19
[2] Diagnostics and service soft switch	20
1. Entering the diagnostic mode	20
2. Diagnostic items description	20
3. How to make soft switch setting	24
4. Soft switch description	25
[3] Troubleshooting	69
[4] Error code table	70
1. Communication error code table	70
MECHANICAL DESCRIPTION	71
[1] Mechanical description	71
1. Facsimile block	71
2. Document feed operation	71
3. Hopper mechanism	71
4. Paper path	72
5. Components layout	73
6. Switch/Sensor layout	74
7. Print process	75
8. Timing chart	82
[2] Disassembly and assembly procedures	83
1. Top cabinet	83
2. Motor cover/Handset holder unit/Bottom cabinet	84
3. Paper hopper unit/PWB’s/Operation panel unit	85
4. Paper hopper	86
5. Front cover unit/PU guide upper unit/PWB plate/Optical unit/Fusing unit/Drive unit	87
6. Wire treatment	88
DIADRAMS	89
[1] Block diagram	89
[2] Wiring diagram	90
[3] Point-to-point diagram	91
CIRCUIT DESCRIPTION	92
[1] Circuit description	92
1. General description	92
2. PWB configuration	92
[2] Circuit description of control PWB	93
1. General description	93
2. Description of each block	93
3. Printer mechanism control block	113
[3] Circuit description of power supply PWB	117
1. Filter circuit block	117
2. Rectification and smoothing circuit block	117
3. Switching circuit block	117
4. Control circuit block	117
5. +24V output circuit block	117
6. +24V MAIN output circuit block	117
7. +24VS circuit block	117
8. AC output circuit block	117
9. Zero cross circuit block	117
[4] Circuit description of CIS unit	118
1. CIS	118
2. Waveforms	118
[5] Circuit description of operation panel PWB	118
1. Operational description	118
2. Block diagram	118
[6] Data flow chart	119
1. COPY	119
2. FAX/SEND	119
3. FAX RECEIVE	119
4. NET WORK (Print)	119
5. NET WORK (Scan)	119
[7] Troubleshooting	120
1. Printer error table	120
2. Troubleshooting of control PWB	120
CIRCUIT SCHEMATICS AND PARTS LAYOUT	122
[1] Control PWB circuit	122
1. Main Control Block (1a/12)	122
2. Main Control Block (1b/12)	123
3. Memory Block (2/12)	124
4. Optical Unit (LSU) Block (3/12)	125
5. Printer Control (Fuser & High Voltage) Block (4/12)	126
6. Printer Control (Main Motor & Sensors) Block (5/12)	127
7. Scanner I/F Block (6/12)	128
8. User I/F Block (7/12)	129
9. LAN Control Block (8/12)	130
10. Power Supply Block (9/12)	131
11. Host Side Device (HSD) Block (10/12)	132
12. SmartDAA4 Line Side Device (LSD) Block (11/12)	133
13. Handset Codec Block (12/12)	134
14. Control PWB parts layout (Top side)	135
15. Control PWB parts layout (Bottom side)	136
[2] Power Supply PWB circuit	137
1. Power Supply PWB circuit	137
2. Power Supply PWB parts layout (Top side)	138
3. Power Supply PWB parts layout (Bottom side)	138
[3] High Voltage PWB circuit	139
1. High Voltage PWB circuit	139
2. High voltage PWB parts layout (Top side)	140
3. High Voltage PWB parts layout (Bottom side)	141
[4] Operation Panel/Hook Switch PWB circuit	142
1. Operation Panel/Hook Switch PWB circuit (1/2)	142
2. Operation Panel/Hook Switch PWB circuit (2/2)	143
3. Operation Panel/Hook Switch PWB parts layout (Top side)	144
4. Operation Panel/Hook Switch PWB parts layout (Bottom side)	145
OTHER	146
[1] Protocol	146
[2] Power on sequence	147
[3] Rewriting version up the FLASH ROM	148
1. Preparations	148
2. Operations	148
PartsGuide	151
[1] Cabinet,etc.	152
[2] Operation panel unit/Document guide upper unit	154
[3] Scanner frame unit	156
[4] Paper happer unit	158
[5] Printer drive unit	159
[6] Fusing unit	161
[7] Packing material & Accessories	163
[8] Control PWB unit	164
[9] Power supply PWB unit	170
[10] High voltage PWB unit	171
[11] Operation panel PWB unit	171
[12] Hook switch PWB unit	171
nINDEX	172

Match case Limit results 1 per page

FO-IS125N

2 – 6

4. IC Protectors Replacement

ICPs (IC Protectors) are installed to protect the Optical (LSU) unit,

Printer motor drive circuit, Solenoid drive circuit and Scanner motor

drive circuit. ICPs protect various ICs and electronic circuits from an

overcurrent condition.

The location of ICPs are shown below:

1) F300 (KAB5002 251) is installed in order to protect IC’s from an

overcurrent generated in the IC302 circuit. If F300 is open, replace

it with a new one.

2) F500 (KAB2402 402) is installed in order to protect IC’s from an

overcurrent generated in the Printer motor drive circuit. If F500 is

open, replace it with a new one.

3) F501 (KAB5002 321) is installed in order to protect IC’s from an

overcurrent generated in the Solenoid driver circuit. If F501 is open,

replace it with a new one.

4) F600 (KAB3202 801) is installed in order to protect IC’s from an

overcurrent generated in the Scanner motor drive circuit. If F5 is

open, replace it with a new one.

Replacement parts

KAB3202 801 (Sharp code: QFS-L1037YCZZ)

KAB5002 251 (Sharp code: QFS-L2021XHZZ)

KAB2402 402 (Sharp code: QFS-L2025XHZZ)

KAB5002 321 (Sharp code: QPRTR2001XHZZ)

5. Power Supply Unit Replacement

1) F1 (K7135AS007): AC250V/10A is installed in order to protect

overcurrent by heater circuit breakdown.

2) F2 (K7144AR005): HTM250V/4A is installed in order to protect

overcurrent by primary circuit breakdown.

3) F101 (K7144AR005): HTM250V/4A is installed in order to protect

overcurrent by breakdown of +24V line.

4) F301 (K7144AR002): HTM250V/2A is installed in order to protect

overcurrent by breakdown of Ach line.

Caution:

Don’t use fuse except for rating above.

6. Volume Adjustment

You can adjust the volume of the speaker, handset, and ringer using

the up and down arrow keys.

Speaker volume

1) Press

2) Press

to select HIGH, MIDDLE, or LOW.

•

To turn off the speaker, press again.

2. Handset

When talking through the handset, press

select HIGH, MIDDLE, or LOW.

•

Note:

The volume reverts to MIDDLE each time you replace

the handset.

3. Ringer

1) Press

to select HIGH, MIDDLE, LOW or

OFF. (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.

If you selected “OFF OK?” to turn off the ringer, press

CNLAN

CNSP

CNTEL

CNLNJ

CNSL

CNPW

CNPN

CNTNR

CNPOUT

CNPIN

CNCIS

CNRTH

CNHV

CNLSR

CNPM

CNMM

CNTXM

F501

F300

F500

F600

CNFM

CONTROL

PWB(TOP SIDE)

F300:Top side

F500/F501/F600:Bottom side

TRANSFORMER

F101

F301

CN3

[SECONDARY]

[PRIMARY]

SPEAKER

START