Ncu (Network Control Unit); North America Version; Europe/Asia Version - Gestetner B130 Service Manual

BLOCK DIAGRAM: PCBS AND COMPONENTS (B129/B130/B168/B169)

6.8.2 NCU (NETWORK CONTROL UNIT)

The NCU implements the interface between the fax system and the telephone
network. An NCU is standard on model B046, and is included as part of the fax
option for B044 and B045.

North America version

NCU
TIP
Surge
LINE
Protect
RING
Surge Surge
Protect Protect
Noise
Filter
FG
TEL
T1
R1

Europe/Asia version

NCU
LINE
SHUNT
T1
TIP
Surge
Protect
RING
R1
Surge
GS
Protect
FG
TEL
SHUNT
T1
R1
GS
Jumper on Europe/Asia version
TB1 Jumper TB1 must be opened on machines installed in Hong Kong.
SM
CÓPIA NÃO CONTROLADA
CMLSW
Noise
Filter
Currect
Detect
CMLSW
Noise
Surge
Filter
Protect
Currect
Detect
GS
6-15
CÓPIA NÃO CONTROLADA
JP (Dry Line)
OHDI Sw.
BR
Surge
Protect
DC-Loop
JP (Dry Line)
H-Trans
Ringing
Detect
DO Sw.
BR
DC-Loop
OHDI Sw.
Ringing
Detect
B129 Series/B044 Series
TRXD
L-Trans
OHDISW
CMLSW
HOOK0
HOOK1
RITONE
EXRING
B046D555.WMF
RITONE
DCLSW
TRXD
L-Trans
DOSW
OHDISW
CMLSW
HOOK0
HOOK1
EXRING
RCSEL
GSSW
B046D556.WMF