Pioneer f-502 Service Manual page 80

Defective points assumed from the number of times of LED flashing
No. of times of LED flashing
Category
LEDs on the MR
LEDs on the panel
∗1
Red Blue Red Blue
Blue 1 Red
Blue 2 Red
Blue 3 Red
Blue 4 Red
Blue 5 Red
Red Blue 6
Red Blue 7
SD
Red Blue 8
Red Blue 9
Red Blue 10
Red Blue 11
Red Blue 12
Red Blue 13
Red 2 Red
Red 3 Red
Red 4 Red
Red 5 Red
Red 6 Red
Red 7 Red
PD
Red 8 Red
Red 9 Red
Red 10 Red
Red 11 Red
Red 12 Red
Red 13 Red
Red 15 Red
∗1: Shutdown (SD) is a protective operation controlled by the microcomputer, and you can turn on the unit
again using the remote control unit. Power-down (PD) is a protective operation activated by the circuitry
and can be reset after AC power is off for about 1 minute.
PDP436PU, PDP506PU, PRO436PU, PRO506PU
Site detected as
defective
∗2
Panel drive IC
∗2
Module section IIC
∗2
Power decrease of
DIGITAL-DC-DC
Panel having abnormally
∗2
high temperature
Short-circuiting of the
∗2
speakers
Disconnection of the system cable
Defective module microcomputer or its peripheral circuits of the panel (Refer to the service manual of the PDP-436PU or
PDP-506PU.)
Module microcomputer
Defective main microcomputer (IC5206)
Failure in communication (TXD_MD, RXD_MD, REQ_MD) between the panel's module microcomputer and IC5206 (main
microcomputer)
Defective IC5002 or its peripheral circuits
Failure in communication (TXD_IF, RXD_IF, CLK_IF, CE_IF, REQ_IF, BUSY_IF) between IC5002 and IC5206 (main
3-wire serial connection
microcomputer)
of the main section Defective IC7001 or its peripheral circuits
Failure in communication (TXD_IC3, RXD_IC3, CLK_IC3, IC3_CE, REQ_IC3, BUSY_IC3) between IC7001 and IC5206
(main microcomputer)
Defective U4401 (FE1) or its peripheral circuits
Defective IC4401 (MPX) or its peripheral circuits ∗3
Defective IC4702 (RGB_SW) or its peripheral circuits
Defective ICxxxx (GCR) or its peripheral circuits ∗4
Defective IC6001 (S-VDEC) or its peripheral circuits ∗5
Defective IC6404 (HDMI) or its peripheral circuits
Defective ICxxxx (PLK-R) or its peripheral circuits
IIC of the main section
Defective IC5405 (TTX-COM, TTX-BSY) or its peripheral circuits ∗3
Defective IC5202 (MA-EEP) or its peripheral circuits
Failure in communication (SCL_AV, SDA_AV, SCL_MA, SDA_MA, SCL_EP, SDA_EP, SCL_HDCP, SDA_HDCP)
between one of the above devices and IC5206 (main microcomputer)
Defective IC5206 (main microcomputer)
Main microcomputer Failure in communication (TXD_IF, RXD_IF, CLK_IF, CE_IF, BUSY_IF) between IC5206 (main microcomputer) and
IC5002
Fan Failure in the fan motor, or the fan stopped because of dust attached to the fan
MR or unit having abnormally
The Media Receiver or the unit being used at high temperature
high temperature
Defective DTV tuner
Digital tuner
Failure in communication (TXD_DT, RXD_DT) between the digital tuner and IC5206 (main microcomputer)
ASIC power supply (DC-DC) Defective U4201 (DD_CON) or short-circuiting elsewhere ∗6
∗2
POWER
∗2
SCAN
∗2
SCN-5V
∗2
Y-DRV
∗2
Y-DCDC
∗2
Y-SUS
∗2
ADRS
∗2
X-DRV
∗2
X-DCDC
∗2
X-SUS
∗2
D-DCDC
∗2
IC4
∗2
UNKNOWN
Possible defective points (representative examples)
Defective U4402 (FE2) or its peripheral circuits
Defective IC4801 (AV_SW) or its peripheral circuits
Defective IC5602 (CCD) or its peripheral circuits
Defective IC6003 (M-VDEC) or its peripheral circuits
Defective IC6201 (ADC) or its peripheral circuits
Defective IC7202 (PLK-T) or its peripheral circuits
∗2: Refer to the service manual of the PDP-436PU or PDP-506PU.
∗3: Only for EU and IRD model.
∗5: Except for US model.
80
OSD when detected
(warning message)
None
None
None
Power off.
Internal temperature is too high.
Check temperature around PDP. [SD04] ∗6
Internal protection circuit turns power off.
Is there a short in speaker cable? (SD05)
None
None
None
None
None
Power off.
Internal temperature is too high.
Check temperature around media receiver. [SD011]
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
∗4: Only for J model.
∗6: Only for one-body model.