Sony PCS-1500 Service Manual page 166

4-2. Self-diagnostics Function
IF-7442
Start up the application
(normal application)
6B loop back
Press START button, input "1L"
to A1, A2, B1, B2, C1, C2,
and dial up
Picture and voice
of the local station
is looped?
NO
Start up the application for service
(*2)
. Press the ALPHA button to
let the message "DEBUG LOOP
ON BRI" appear, and move down
the joy stick to let the message
"CALL 6B 1100 1100 1200 1200
1300 1300" appear on display
Input ">set[|]1470000e[|]1↓",
and press DIAL key
Picture of the
local station is displayed on
monitor, and voice of the local
station can be heard from
your local
station?
NO
IC750, and its peripheral (TDM)
4-36
YES
YES
IC100, IC200, or their
peripheral (81504)
Loop back at telephone office
Press START button, enter the
loop back number of telephone
office to A1, A2, B1, B2, C1,
C2, and dial up.
Picture of the
local station is displayed on
monitor, and voice of the local
station can be heard from
your local
station?
NO
FL100, T101, T102, FL200,
T201, T202, or their peripheral
When "SONY" appears immediately after startup,
(*2) :
press the "ENTER" button of remote control unit
once. Then a message appears prompting you to
input the password. Enter "1500" and the service
mode starts up.
YES
The terminal has no problem
Check connection to the line
PCS-1500/1500P