LV
How to check
D602
VIDEO
ENCODER
NG
USB
CONTROLLER
NG
(Flashes 3 times)
(Lit)
(Lit)
×
(Unlit)
×
(Lit for 2 sec)
B SIDE
PANEL NG
(Lit) (Flashes 4 times)
(Flashes 5 times)
(Flashes 6 times)
N0
N2
N3
N4
N5
N6
NOK
Configuration of the USB controller is not
completed.
*Note that communication with the main CPU
(NORTH CPU) is normal even if the 6-MHz clock is
defective.
Communication with the video encoder is not
possible.
*Note that communication with the main CPU
(NORTH CPU) is normal even if the 27-MHz clock
is defective.
Communication with the CENTER PANEL
microcomputer is not possible.
*If the CENTER PANEL microcomputer is defective,
operation in Service mode is disabled. In such a
case, use the USB 1 STOP key on the drive unit
as a substitute for the Select Up or Down key.
Communication with the A-SIDE PANEL
microcomputer is not possible.
(Lit)
(Lit)
(Lit)
Remarks
Judgment
Defective device
No failure
• Defective CPU
• Defective bus (Because of equal-length wiring,
even if one of the cables is defective, a device
connected to that bus becomes unstable.)
*In a case of a failure in the line from the CPU to
the SDRAM CS, operation of the LEDs is irregular.
Communication with the B-SIDE PANEL
microcomputer is not possible.
Normal startup
Main CPU
(NORTH CPU),
flash ROM,
or SDRAM
USB controller
Video encoder
CENTER PANEL
microcomputer
Pin 2 of IC1700
Device
diagnosis
A-SIDE PANEL
microcomputer
B-SIDE PANEL
microcomputer
CENTER
PANEL NG
Status Pulse output
A SIDE
PANEL NG
(Flashes twice)
Memo: If the N0 step is successfully cleared, the startup sequence will not be interrupted even if not all devices
operate properly.
Memo: If several devices are in failure, the least critical failure is indicated with the LEDs.
The Status LED 2 is to be mounted upon future design change.
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General
Weight and Dimensions
