Ricoh infotec 3671F Service Manual page 50

July 30th, 1996
2.4.3. NCU (USA)
TIP
RING
T1
R1
1. Jumpers
Item
JP5 These jumpers should be shorted when the machine is connected to a dry
line.
JP6
Current
Sensor
JP6
NCU
24V
Relay
2-33
DETAILED SECTION DESCRIPTIONS
JP5
OHDISW
24V
Q6
Ring Detect
Ext. Tel
DP/Off-
Hook
Detection
Q5
Description
PCBs
TRXD
OHDISW
Hook0
Hook1
Ex Ring
RITONE
Ex TDI
CMLSW
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