Self-Diagnostics Function; About Self-Diagnostics Function - Sony PCS-1500 Service Manual

4-2. Self-diagnostics Function

4-2. Self-diagnostics Function

4-2-1. About Self-diagnostics Function

Confirm the symptoms and their corresponding errors using Sections "4-1. Check Items Before Starting
Self-diagnostics" and "4-2-1. About Self-diagnostics Function". Confirming the symptoms and their
corresponding errors as described above indicates whether the error is caused by operation error of users
or whether repairing the circuit board of the PCS-1500/1500P is necessary or not. When the cause of
error can be located by replacing the circuit boards or options, replace the parts/components and check
operation following the self-diagnostics flow charts. When repairing a circuit board becomes necessary,
activate the self-diagnostics and perform repairing. Start with the (0-0) step of the self-diagnostics flow
charts. Problems are found during the course of self-diagnostics. If cause of error cannot be identified by
the self-diagnostics flow charts, perform "4-2-2. Diagnostics on Each Block" of the block that is suspect-
ed to be defective from the trouble symptoms.
When repair is completed, perform the operation check in accordance with the following notes.
. Because there can be cases that the built-in flash memories are cleared, it is recommended to install the
newest software before starting repair work.
. The reference numbers and pin numbers are indicated as Ref. No. [pin No.].
Voltage between pins is indicated as Ref. No. [pin No. - pin No.].
. Set the communication conditions of the terminal that is connected to the DIAG port as follows. Use a
sex-inverted cable for connecting the communication terminal.
Communication speed : 9600 bps
Data Length
Start bit
Stop bit
Parity
Flow control
. The diagnostics mode can be started up from the terminal that is connected to the DIAG port by turning
on the main power while pressing the [CTRL] + D keys.
When flow chart or description has the following expression:
#diag[|]auto↓
It indicates entry into the prompt line in the diagnostics mode.
At the same time, [|] indicates pressing a space key and ↓ indicates pressing the ENTER key.
. When flow chart or description has the following expression:
>mail[|]12,3456790↓
It indicates entry into the prompt line in the application.
At the same time, [|] indicates pressing a space key and ↓ indicates pressing the ENTER key.
. When you want to diagnose the video block, you needs to enter as follow:
#diag[|]setVCPDRAMSize[|]4↓
#diag[|]video↓
4-22
: 8 bits
: 1 bit
: 1 bit
: None
: Xon/Xoff
PCS-1500/1500P