Diagnosis Of Pd (Power-Down) And Sd (Shutdown); Block Diagram Of The Power Down Signal - Pioneer PDP-5016HD Service Manual

5

5.2 DIAGNOSIS OF PD (POWER-DOWN) and SD (SHUTDOWN)

QQ
3 7 63 1515 0
• Diagnosis of the PDP Module
Temp. sensor and
backup data memory
Digital Assy
(42'; AWV2301)
(50'; AWV2302)
LED for Diagnosis
(Left; Green)
(Right; Red)

5.2.1 BLOCK DIAGRAM OF THE POWER DOWN SIGNAL

TE
L 13942296513
• Check LED flashes on INTERFACE Assy
Normal operation
Stanby ; Red
Power ON; Green
LED
Green Red
INTERFACE Assy
(AWV2373)
www
.
5
http://www.xiaoyu163.com
6
Interface Assy
(42',50'; AWV2373)
P/D and S/D diagnoses with a blinking of a red or a green LED in the interface Assy.
DIGITAL Assy
EXT_PD
IC3155
PD
mute
x ao u163
y
i
Note: The figure number shows the LED blinking times if Power down.
6
http://www.xiaoyu163.com
7
2 9
8
Power supply Unit ;
(42', 50'; AXY1153)
Q Q
3 6 7 1 3 1 5
D3501
D3502
8
OR
XDRIVE_PD
XDD_CNV_PD
9
10 11
XSUSTN_P
OR
IC3151
PS_PD
Module
2
microcomputer
co
PD_TRIGGER
PS_PD
.
PD_MUTE
PDP-5016HD
7
9 4 2 8
0 5 8 2 9 9 4 2 8
D15 D18
ADDRESS ASSY ADDRESS ASSY
ADDRESS ASSY ADDRESS ASSY
ADDRESS ASSY ADDRESS ASSY
ADDRESS
Assy
D19
X DRIVE
Assy
X1
D20
3
Y DRIVE
SCAN_PD
Assy
4
SCN5V_PD
5
YDRIVE_PD Y1
6
YDD_CNV_PD
7
YSUSTN_PD
POWER SUPPLY Unit
m
PS_PD
detect
Relay
PD
8
9 9
A
B
C
9 9
D
E
F
149
8