Pioneer f-502 Service Manual page 27

Block Diagram of the Shutdown Signal System ("STANDBY/ON" LED: Blinking in green)
DIGITAL VIDEO ASSY
Panel UCOM
RXD
DDC_SCL
BUSY
DDC_SDA
REQ_PU
2
Module UCOM
D3
2
A_SCL
A_SDA
SW POWER SUPPLY
MODULE
MR INTERFACE ASSY
R3
Expander
Expander
Note: The figures 1 - 4 indicate the number of times the "STANDBY/ON" LED blinks when shutdown occurs in the
corresponding route.
IC1101
TXD
CLK
1
*PU_CE
TEMP1
IC1207
SCL
SDA
Expander
IC4204
SiI861
IC4005
IC4011
PDP-433PU
PDP-503PU
IC1191
Panel UCOM
external Flash ROM
D18
4
IC1204
EEPROM
2
D1
P2
AUDIO ASSY
IC5202
CXA2021S
MEDIA
RECEIVER
27
THERMAL SENSOR
ASSY
IC8351
TE1
Thermal
Sensor 1