Rap 25 Dialing And Connecting - Xerox Document Workcenter 150 Service Manual

RAP 25 Dialing and Connecting
This procedure is used to troubleshoot failures of a
send operation from the machine. It does not
include image quality problems.
Initial Actions
* Check that the telephone line cable is
correctly connected.
* Ensure that the cable is not damaged.
- Ensure that the machine is set to the correct
dial mode; lone or pulse.
Voltages are correct.
Y N
I
Replace Main PWB (REP 6.1).
5. Replace NCU PWB (REP 6.3).
6.
Connect another telephone to this telephone
line at the wall outlet. Use this telephone to
manually dial the remote machine.
The remote machine answers and sends a
ready tone back.
i
N Inform the customer of the telephone
line oroblem.
Procedure
7. Replace the first telephone.
1. Use the external telephone to manually dial
the remote machine.
The remote machine answers and sends a
ready tone.
i :otostep6.
2. Locate the NCU PWE connector CN12 on the
main PWB. Measure the vollages at the
following pins.
(3.4,2-z, .____.___._.__...__. +,2"DC
CN,2-2 ~---~---~------~,z"DC
CNIZD,10,11&12------------+SVDC
CN,2-13 --~~_--~~--~~ py,,s,,DC
Voltages are correct.
i Lmstep4.
3. Replace the NCU PWB (REP 6.3).
4. Disconnect connector CN12 and measure the
voltages at the following pins on the main
PWB.
CN12-4,5,6&13 -------------+SVDC
CN,2.2 ~--------------~,zVDC~
cpJ,z.g . .._..._......_._.__ +,z"lJC
CNIZ-IO, 11 812---------- c.4VDC
n
#AiN PWB PL 8.1
r12 "DC
?-
+5 VDC
?-
J"
DC COM
DC
Cl
-.
--
CONTROL LINES
NW PWB PL 8.1
Document WorkCenter 150
z-19 RAP 25 Dialing and Connecting