Pioneer Elite PRO-506PU, Service Manual

Page: 45 / 142

• Identification of locations having abnormality by the number of times the LEDs flash
On Shutdown and power-down
∗
If the unit cannot identify which protection circuit was activated, even if a power-down had been detected, the red LED may flash 15 times.
Shutdown
• Operation: When the microcomputer detects any abnormality, it forcibly turns off the unit.
• LED indication: The green LED flashes.
Power-down
• Operation: When the unit is in emergency status, a protection circuit is activated, and the power is turned off.
• LED indication: The red LED flashes.
Category
MR-LED PANEL-LED
Content Unit's operation
Warning indication
when the MR is connected
STB ON STB ON
SD
Lit 1 time
Communication failure of the
panel-drive IC
Immediate shutdown
Lit
2 times
Communication failure of the
module IIC
Immediate shutdown
Lit
3 times
Power decrease of the digital
DC-DC converter
Immediate shutdown
Lit
4 times
Panel having high
temperature Shutdown 30 seconds
after warning
Powering off. Internal temperature too high
Check temperature around PDP.
Check temperature around media receiver.
[SD04]
Powering off. Internal temperature too high
Check temperature around PDP.
Check temperature around media receiver.
[SD11]
Lit
5 times
Audio failure
Shutdown 3 seconds
after warning
Powering off.
Internal protection circuits activated,
Is there a short in speaker cable ?
[SD05]
6 times
Lit
Communication failure of the
module microcomputer
Immediate shutdown
7 times
Lit
Main 3-wire serial
communication in failure
Immediate shutdown
8 times
Lit
Communication failure of the
main IIC
Immediate shutdown
9 times
Lit
Communication failure of the
main microcomputer
Immediate shutdown
10 times Lit Fan in failure Immediate shutdown
11 times
Lit
MR or unit having higher
temperature Shutdown 30 seconds
after warning
12 times
Lit
Communication failure of the
digital tuner
Immediate shutdown
13 times
Lit
MR-ASIC power (DC-DC) in
failure
Immediate shutdown
14 times
Lit
Communication failure of
IF-EEPROM
Immediate shutdown
PD
1 time Lit MR power supply Immediate power-down
Lit
2 times
Panel-POWER SUPPLY Immediate power-down
Lit
3 times
SCAN Immediate power-down
Lit
4 times
SCAN-5V Immediate power-down
Lit
5 times
Y-DRIVE Immediate power-down
Lit
6 times
Y-DCDC Immediate power-down
Lit
7 times
Y-SUS Immediate power-down
Lit
8 times
ADDRESS Immediate power-down
Lit
9 times
X-DRIVE Immediate power-down
Lit
10 times
X-DCDC Immediate power-down
Lit
11 times
X-SUS Immediate power-down
Lit
12 times
DIGITAL-DCDC Immediate power-down
Lit
15 times
UNKNOWN
∗
Immediate power-down
45
PDP434PU, PDP504PU, PRO434PU, PRO504PU, PDP435PU, PDP505PU, PRO435PU, PRO505PU