Power On Sequence - Pioneer PDR-W839 Service Manual

7.1.3 POWER ON SEQUENCE

POWER ON SEQUENCE (Display System)
POWER ON
CD1, CD2, CD3
CD → CD-R
LED flash
FL display
"POWER ON"
Yes
3CD SETUP
SETUP SEQUENCE (CD-R)
POWER ON
Is the mecha.
controller reset
release?
Yes
Is the communi-
cation between mecha.
controller and each
LSI start?
Yes
Is the communi-
cation between system
controller and mecha.
controller start?
Yes
No
Is the DISC
distinction
start?
Yes
No
No DISC?
Yes
STOP
Check Point
• Blow out fuse (FU01) of the primary side on the POWER SUPPLY Assy
• Blow out micro-fuse (IC02,IC03) on the POWER SUPPLY Assy
• System controller (IC901) on the MAIN Assy breaks down
When FL does not turn on at all:
• Check the connection between the MAIN Assy and OPERATING
1 Assy.
• Check the communication lines (FLDI, FLCL, FLCE and FLRST)
No
between the system controller (IC901) and FL driver (IC701).
• FL Driver (IC701) on the OPERATING1 Assy breaks down.
When FL indication is dark or glimmers:
• Malfunction of the POWER SUPPLY Assy
• Check the following connections:
MAIN Assy - OPERATING 1 Assy
MAIN Assy - POWER SUPPLY Assy
Check Point
• Reset signal (MRESET) from the system controller to the
No
mechanism controller
• Check the connection between the MAIN Assy and CD-R
CORE Assy
• Blow out micro-fuse (IC02) on the POWER SUPPLY Assy
No
• Check the power supply voltage on the CD-R CORE Assy
(XPFAIL=H (normal))
• Check the communication between the mechanism cont-
roller and each LSI
MSI, MSO, MSCK, EECS,AD0~7,XRD,XWR,ASTB
• Communication between the system controller and mech-
No
anism controller
MSI,MSO,SSCK,SREQ,MACK
• Blow out micro-fuse (IC04) on the POWER SUPPLY Assy
"CD", "CD-R" or "CD-RW" segment turns on to
the right-side end of FL
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