Setup Sequence - Pioneer DVR-220-S Service Manual

1

7.1.8 SETUP SEQUENCE

Tuner/FL U-com
Connect power cord.
A
Tuner/FL microcomputer starts up.
Initialization of peripheral-circuit
register, RAM, etc.
"POWER ON" displayed
on FL display
Clock indication on FL display
B
Power ON ?
Yes
Power ON, cancellation of reset
"POWER ON" displayed
on FL display
C
Waiting
NG
for communication to be
established
OK
Key-input and channel data
transmitted to the system-control
D
computer, and responding to
instructions from it,
indication displayed on FL
display and channel switching
performed
E
F
90
1
2
System Codec IC (Inital Program Loader)
System microcomputer starts up.
LSI Check
OK
FLASH Check
OK
Firmware stored in Flash memory
is developed in SD-RAM expanding
the compressed data.
No
Jumping to developed firmware
System Codec IC (Firmware)
Initialization of peripheral-circuit
register, RAM, etc.
Starting communication
with Tuner/FL microcomputer
Obtaining LD
temperature data from drive.
Is temperature below
59°C?
Is ID check of drive OK?
Yes
Is disc in?
Yes
Is disc valid?
Yes
Playback requested?
Yes
Playback
DVR-220-S
2
3
DVD-R/RW Drive
NG
LSI NG displayed
on FL display
NG
No
Downloading through
RS232C required.
"MONITOR" displayed
on FL display
Request for power off of
system-control computer made to
Tuner/FL microcomputer
No
System-control computer is turned off
(entering standby) following request
from Tuner/FL microcomputer
No
"CPRM ERR" displayed on FL display
No
No
Tray Open
No
Stop
3
4
Drive microcomputer starts up.
Initialization of peripheral-circuit
register, RAM, etc.
Has command arrived?
Yes
ATA/ATAPI command processing
4