Sony PCS-1500 Service Manual page 155

C-01
The system does
not always start up?
YES
Within 10
seconds after the main
power is turned on, data is
present at the output of
IC200 [13]
NO
Within 10
seconds after the main
power is turned on, the signal
level at IC200 [11]
changes
NO
P-01
X100 = 7.5 MHz?
YES
IC100 [88] = 3.3 V?
YES
Replace IC100
C-2
m
When flash memory (IC103, IC104) is replaced, be sure to input the following command:
#diag[|]diagCompletionMark↓
If the command is not input, application software cannot be started up.
After the command is inputted, inserting the memory card of the application and downloading the
software become necessary.
PCS-1500/1500P
NO
IC115 and its peripheral
YES
IC200 and its peripheral
YES
Cable, connector, or their peripheral
NO
X100 and its peripheral
NO
IC114, IC115 or their peripheral
C-02
Startup message appears?
NO
Replace IC103 and IC104
Startup message appears?
NO
Replace IC100
Startup message appears?
NO
Replace the devices such as
IC105 and IC108 that are
connected to the data bus Dxx
and to the address bus Axx
4-2. Self-diagnostics Function
YES
again
0-0
YES
again
0-0
YES
again
0-0
4-25