Sharp AM-900 Service Manual page 22

AM-900U
4. IC protectors replacement
ICPs (IC Protectors) are installed to protect the CIS unit, LIU PWB
unit, Scanner motor drive circuit, Pickup motor drive circuit, Main
motor drive circuit and IC22 circuit. ICPs protect various ICs and elec-
tronic circuits from an overcurrent condition.
The location of ICPs are shown below:
CNLSR
F5
F7
CONTROL PWB
(TOP SIDE)
CNPUM
F6
CNTCT
CNROLSNS
CNTCVR
CNPW
F6/F8:Top side
1) F8 (KAB5002 201) is installed in order to protect IC's from an
overcurrent generated in the CIS unit. If F8 is open, replace it with a
new one.
2) F4 (KAB5002 251) is installed in order to protect IC's from an
overcurrent generated in the LIU PWB unit. If F4 is open, replace it
with a new one.
3) F3 (KAB3202 202) is installed in order to protect IC's from an
overcurrent generated in the scanner motor drive circuit. If F3 is
open, replace it with a new one.
4) F5 (KAB5002 251) is installed in order to protect IC's from an
overcurrent generated in the IC22 circuit. If F5 is open, replace it
with a new one.
5) F6 (KAB3202 102) is installed in order to protect IC's from an
overcurrent generated in the pickup motor drive circuit. If F6 is
open, replace it with a new one.
6) F7 (KAB2402 402) is installed in order to protect IC's from an
overcurrent generated in the main motor drive circuit. If F7 is open,
replace it with a new one.
In addition to the replacement of F3, F4, F5, F6, F7 and F8, the fac-
tor causing F3, F4, F5, F6, F7 and F8 to open must also be
repaired. If not, F3, F4, F5, F6, F7 and F8 will open again.
Replacement parts
KAB3202 202 (Sharp code: QFS-L1027YCZZ)
KAB5002 251 (Sharp code: QFS-L2021XHZZ)
KAB3202 102 (Sharp code: QFS-L0004QCZZ)
KAB2402 402 (Sharp code: QFS-L2025XHZZ)
KAB5002 201 (Sharp code: QFS-L2016XHZZ)
CNPN
F8 CNSCM
F3
CNFRT
CNORG
CNHPS
CNSP
CNUSB
F4
CNIU
F3/F4/F5/F7:Bottom side
5. Settings
5.1. Dial mode selector
DIAL mode (Soft Switch No. SW5 Data No. 5)
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: ,
2
DISPLAY: DISPLAY:
("2=PULSE" is displayed in the
autoscroll mode.)
(step 3) Select, using "1" or "2".
KEY:
KEY:
(step 4) End, using the "STOP" key.
(Press the "STOP" key three times.)
KEY:
2 – 6
FAX MENU
FAX SETTING
4
1=TONE
1 for TONE
2 for PULSE