Ricoh FAX220, Service Manual

Page: 62 / 75

6-3-1. LIU-Line
CN1
No Name Function V
1 SHUNT Shunt signal 0(L)
2 T1 External phone tip L
3 L1 Phone line tip L
4 L2 Phone line ring L
5 T2 Extermal phone ring L
6 GSTART Tel ground 0(L)
6-3-2. LIU - Handset
CN6
No Name Function V
1 SPL Speaker - 0
2 MICL Microphone - 0
3 SPH S 0
4 MICH Micr 0
6-3-3. LIU - FCE
CN7: See FCE CN4 (section 6-1-4).
6-3-4. LIU - FDU
CN4: See FDU CN22 (section 6-2-13).
6-3-5. LIU - HSB
CN5
No Name Function V
1 LINE1 Connection from the line L
2 RING1 Connection to the ring
detection circuit
L
3 TEL1 Connection to the
handset
0
4 RING2 Connection to the ring
detection circuit
L
5 TEL2 Connection to the
handset
0
6 LINE2 Connection from the line L
6-3-6. LIU - HSB
CN8
No Name Function V
1 INTHK Handset off-hook 5
2 COM1 Ground 0
6-3-7. LIU - OPU Dialpad
CN3
No Name Function V
1 LSWS0 Key input 3
2 LSWS1 Key input 3
3 LSWS2 Key input 3
4 LSWC0 Common signal to the
dialpad
0 - 4
5 LSWS4 Key input 3
6 LSWC2 Common signal to the
dialpad 0 - 4
7 LSWC1 0 - 4
8 LSWS3 Key input 3
6-3-8. LIU-Tel
CN2
No Name Function V
1 SHUNT Shunt signal 0(L)
2 N.C. No connection
3 T1 Phone line tip L
4 T2 Phone line ring L
5 N.C. No connection
6 GSTART Tel ground 0(L)
Note: "V" is the level of the signal after power on.
C: Clock (0 - 5V)
X: Analog (0 - 5V)
L: Telephone line
6-8