43
PSR-S550/PSR-S550B
■
SYSTEM BOOTING FLOW CHART
Power On
Set CPU(SWX) port
registers
E-IC = L (IC7 D12,72Pin)
TxD0 = H (IC7 B7,27Pin)
TxD1 = H (IC7 B6,26Pin)
Access beginning to the
IC9(Program Flash ROM).
Access beginning to the
IC8(SDRAM).
Access beginning to the
IC10(Backup Flash ROM).
Transmissin beginning
by RxD1,SCK1.
Test program
routine
It the booting procedure stops here,
there is a possibility that the
following ICs are defective.
• PROGRAM FLASH(IC9)
• SDRAM (IC8)
BACK-UP FLASH(IC10) is
defective when the
"All Memory Cleaning..."
is displayed every time.
BACK-UP FLASH(IC10) is
defective when the
"All Memory Cleaning..."
is displayed every time.
BACK-UP FLASH(IC10) is
defective when the
"All Memory Cleaning..."
is displayed every time.
Access beginning to the
IC4(LCD Controller).
Clock output beginning from
SYSCLK
(IC7(CPU) Y12,308Pin).
Initialize
BOOT SDRAM
Initialize Ports
PD2 = H (IC7 V7,263Pin)
PD3 = H (IC7 W7,283Pin)
PD6 = H (IC7 V8,264Pin)
PD7 = H (IC7 W8,284Pin)
PG2 = H (IC7 P2,198Pin)
PG7 = H (IC7 N4,190Pin)
Release peripheral ICs reset
/LCD-IC = H (IC20,4Pin)
Release peripheral ICs reset.
/DAC-IC = H (IC20,6Pin)
Release peripheral ICs reset
EICN = H (IC7 D12,72Pin)
Initialize
BACK-UP FLASH
(IC10)
Transmission MKS ACK
TxD1 = L (IC7 B6,26Pin)
TxD1 = H (IC7 B6,26Pin)
Opening screen will appear.
/LCD-OFF = H (IC20,2Pin)
yes
no
Opening screen
will appear
Main screen
will appear
Main program
routine
Test Program
mode?
"Test Mode"
yes
no
Factory Set
executed?
"All Memory
Clearing..."
yes
no
Backup Clear
started?
"Backup
Clearing..."
yes
no
Song Clear
started?
"Flash
Clearing..."
* "Factory Set" refers to the condition of turning on the power after
executing "Factory Set" in the Test Program.
Release
PN-IC
PN-IC=L(IC7,W8,284Pin)
/PN-IC=H(IC20,8Pin)
If it does not reach to this
stage, the following IC is
defective.
• PROGRAM FLASH (IC9)
Beginning telecommunication
with panel CPU
IC7, C7, 47Pin=L/H
If it is not telecommunicated,
the following points are
defective.
•
PNL circuit board
•
No connection with CN701
PN-IC
reset
PN-IC=H(IC7, W8, 284Pin)
/PN-IC=L(IC20, 8Pin)
Содержание PSR-S550
Страница 23: ...23 PSR S550 PSR S550B Pattern Side 2NA WH33370 DM Circuit Board...
Страница 27: ...27 PSR S550 PSR S550B 2NA WH33400 B B B B to DM CN701 to PNC CN202 to PNR CN301 Pattern Side PNL Circuit Board...
Страница 29: ...29 PSR S550 PSR S550B 2NA WH50940 to PNL CN101 B B B B Pattern Side PNC Circuit Board...
Страница 31: ...31 PSR S550 PSR S550B B B B B to PNL CN102 Pattern Side 2NA WH50940 PNR Circuit Board...
