Pioneer BONUS VIEW BDP-51FD, Руководство по обслуживанию

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23
BDP-51FD
5 6 7 8
5 6 7 8
A
B
C
D
E
F
5.2 RESET ON SEQUENCE
10k
3.3 V
1.1 V
ResetIC
IC4201
1.1 V
Subcon
IC4001
Main_LSI
3.3 V 1.1 V 1. 8V
IC4002
3.3 V (E)
3.3 V
ResetIC
Drive
22k
N OR FLASH
HDMI
SiI9134
SCO N _XRESET
After detecting 3.3 V (E) O N /OFF,
hold 200ms SCO N _XRESET "L"
and turn to SCO N _XRESET "H".
By main reset release "H", Subcon
conducts operation.
[detect 1.1 V Reset]
After detecting 1.1 V O N /OFF,
Transit ResetG "L", then instantly
to ResetG "H".
ATIRESET
R 8 A34019BG
0
Ω
RESET_SKY#
RESET2#
HDMI_RESET
N OR FLASH
MAI N LSI
R1133
R5034
0
Ω
[2] Reset specification
[On start-up]
Receiving Power O N key, sub-microcomputer turns Power_O N signal to ”H”.
Receiving Power O N signal, power turns each S W power to ”O N ”.
1.1 V turns O N .
Sub-microcomputer is (after 400 ms) to Reset_SKY#, Reset 2#, Reset 3# ”L” turn to ”H”.
Power_O N
1.1 V
Reset_SKY#,2#,3#
[At normal end]
Sub-microcomputer detects the pushing of Power key, then notifies PowerOFF to R 8 A34019BG by I C.
Receiving PowerOFF notification, R 8 A34019BG conducts end processing.
R 8 A34019BG instructs PowerOFF to sub-microcomputer by I C.
Sub-microcomputer turns Reset_SKY#, Reset 2#,Reset 3#,to ”L”, and after 1 sec, PowerO N signal to ”L”.
After 50msec, power turns each S W power to OFF.
Reset_SKY#,2#,3#
Power_O N
[Power abnormality]
*Reset operation in the case of 1.1 V drop.
Determine if ResetG becomes ”L”, then turn Reset# - Reset3# to “L”.
[At abnormal end]
ACOFF
By turning V +1R1D to OFF, ResetG# turns to ”L” by ResetIC.
Power_O N
V +1R1D
Reset
(IC4201 OUT)
Reset_SKY#,
Reset 2#,
Reset 3#
PO N key
400 ms
1 sec
2
2
[1] Block Dia g ram