Sony PCS-1500 Service Manual page 174

4-2. Self-diagnostics Function
UD-1
After connecting the loop back
(*1)
tool , start up the system
using the diagnostics mode
#diag[|]userdata↓
UART detection :
DETECTED?
YES
Internal
data path loop-back test :
PASSED?
YES
External
loop-back test :
PASSED?
YES
There is no problem
Check connection and software
4-44
NO
NO
Replace IC201
NO
Replace IC203
(*1) Tool for the external loop back test
Prepare the D-sub pin-9 connector and
connect the pins as shown below.
1==4==6
2==3
7==8==9
PCS-1500/1500P