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5
5. DIAGNOSIS
5.1 SETUP SEQUENCE
Tuner/FL microcomputer
Connect the power cord.
Tuner/FL microcomputer starts up.
Initialization of the peripheral
circuit register and RAM, etc.
Clock displayed
on the FL display.
No
Power ON ?
Yes
Power ON/Release the reset
"POWER ON" displayed
on the FL display.
Waiting for
communication to be
No
established.
Yes
Key input and channel data
transmitted to the system
controller.
And make displayed data by
instructions from the system
controller, and switch a
channel.
5
6
System Codec IC (Initial Program Loader)
System microcomputer starts up.
Yes
NG
FLASH check ?
Downloading through
OK
RS232C required.
FLASH check is NG
"POWER ON" displayed
for over 1 minutes
on the FL display.
Firmware stored in Flash memory
is developed in SD-RAM
expanding the compressed data.
Jumping to developed
firmware.
System Codec IC (Firmware)
Initialization of the peripheral
circuit register and RAM, etc.
Communication start with the
Tuner/FL microcomputer.
Obtaining LD
temperature data from drive.
Is temperature below
74°C?
Yes
Is ID check of drive OK?
Yes
Is starting/ID check of
HDD OK?
Yes
No
Is disc in?
Yes
No
Is disc valid?
Yes
No
Repair required?
Yes
Repair process
No
Playback
requested?
Yes
Playback
DVR-LX61D
6
7
DVD-R/RW Drive
Drive microcomputer
Initialization of the
peripheral circuit
register and RAM, etc.
when
No
command processing
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
"E01 or E02" displayed on FL display
∗1: If both the drive ID check and starting/ID
check of HDD failed, "CPRM ERR" is first
displayed on FL display.
Tray Open
Stop
7
8
A
starts up.
Has
command
B
arrived ?
Yes
ATA/ATAPI
C
D
∗1
∗1
E
F
41
8
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- Firmware Update Method
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