Sony BDP-N460 Service Manual ▷ View online
9-9
BDP-N460
FL/FR Board flowchart (1/3)
Power button on the main unit does not work
Ke
y
1 does not o
p
erate
Does symptom improve when replacing the
FL board?
No
To IFcon section flowchart
Is there voltage of about 3.3V at pin
13 of CN701 without pressing the
keys?
No
To IFcon section flowchart
Yes
Yes
The potential of pin 1 of CN331 does not
change from 3.3V to near 0V when pressing
the power button
No
Check pattern and S331 might be broken
Check the resistance of resistors of
Key1 line. Also check the surrounding
pattern.
Yes
Disconnected harness or replace FL board.
Ke
y
o
p
erations cannot be made on the main
Ke
y
2 does not o
p
erate
Does symptom improve when replacing the
FR board?
No
To IFcon section flowchart
Is there voltage of about 3.3V at pin
14 of CN701 without pressing the
keys?
No
To IFcon section flowchart
Yes
Yes
Which row of keys do not operate?
Check the resistance of resistors of
Key2 line. Also check the surrounding
pattern.
STOP buttons -> To
Key1 does not operate
Reference: Relationship of Buttons and Voltages
OPEN/CLOSE button -> To
Key2 does not operate
PLAY button -> To
Key3 does not operate
Ke
y
3 does not o
p
erate
Is there voltage of about 3.3V at pin15
of CN701 without pressing the keys?
No
To IFcon section flowchart
Yes
Check the resistance of resistors of
Key3 line. Also check the surrounding
pattern.
㪠㫅㫇㫌㫋
㪭㫆㫃㫋㪸㪾㪼㩿㪭㪀
㪉㪅㪐㪇㪄㪊㪅㪊㪇
㪇㪅㪏㪊㪄㪈㪅㪉㪊
㪇㪅㪇㪇㪄㪇㪅㪋㪇
㫒㪢㪜㪰㪇㫔
㪢㪼㫐㪶㪦㪝㪝
㪄
䇺㪧
㪦㪮㪜
㪩
䇻
㫒㪢㪜㪰㪈㫔
㪢㪼㫐㪶㪦㪝㪝
䇺㪪
㪫㪦㪧
䇻
㪄
㫒㪢㪜㪰㪉㫔
㪢㪼㫐㪶㪦㪝㪝
㪄
䇺㪦㪧㪜
㪥
㪆㪚㪣㪦㪪
䇻
㫒㪢㪜㪰㪊㫔
㪢㪼㫐㪶㪦㪝㪝
㪄
䇺㪧
㪣㪘㪰䇻
9-10
BDP-N460
FL/FR Board flowchart
(2/3
)
FLD does not li
g
ht
LED does not li
g
ht
Is there voltage of about 5.8V at PS701?
No
To FLD Switch Surrounding Check
Is there voltage of about 5.8V at
PS701?
No
To "LED Switch Surrounding Check"
Yes
Yes
Is there voltage of about -22V at JL701?
No
Check the circuits surrounging the FLD DD
CONVERTER.
If NG, then replace the FR board.
Is there voltage of about 5.8V at
Emitter Q709?
No
Check the "LED Switch Surround
check"
If NG, then replace the FR board
Yes
Yes
Is there voltage of 3.3V at Pin43 of IC702?
No
Check the 3.3V line of the FR board.
Is there voltage of 3.3V at Pin43
of IC702?
No
Check the 3.3V line of the FR board
Yes
Yes
Is pin5 of IC702 oscillating?
No
Replace IC702. If no effect, replace the FR
board.
Are Pin1, Pin2 and Pin3 of
IC702 about 3.3V?
No
Replace IC702
If no effect, replace the FR board
Yes
Yes
Is there input of pulse to pins 7, 8 and 9 of
IC702?
No
Replace FFC between FR and MB. If no
effect, then goto IFD flow
Replace Q711 and Q710, if no
effect then replace FR board
Yes
Check connection of FLD and IC702.
Replace IC702 if OK.
If no defect, replace the FL board
FLD Switch Surroundin
g
Chec
k
Is the potential of pin3 of Q704 5.8V?
No
Check the 5.8V line of the FR board.
Yes
Is the potential of the base of Q704 around
5V?
Yes
Is the collector voltage of Q703 about 0V?
No
Is the voltage of the base of Q703 at
3.3V?
No
Is pin7 of CN701 at 3.3V?
No
Replace FFC and Check pattern near
IC1403 of MB board. Replace IC1403
or MB board if NG.
No
Yes
Yes
Yes
Replace Q704
Replace Q704
Replace Q703
Replace the FR board
9-11
BDP-N460
FL/FR Board flowchart
(3/3
)
LED Switch Surroundin
g
Check
Is Pin3 of CN701 at 6V?
No
Symptom improve when replcacing FFC?
No
Replace MB board
Yes
Is the potential of R719 6V?
Yes
Symptom improve when replcacing FR
board?
No
Check pattern near IC1103 of MB
board.
Replace IC1103 or MB board if NG.
No
Yes
Replace PS701
Replace FR board
Remote control does not o
p
erate
Symptom improve when replacing FR
board?
No
Are there signals to pin17 of MB board
CN1104?
No
Replace FFC
Yes
Yes
Are there signals to IC1103 pin24?
No
Check MB pattern near IC1103
Yes
To IFcon section flowchart
Is there output of about 3.3V for potential of
CN701 pin17?
No
Replace IC701 and check FR board pattern
Yes
Disconnected flexible harness
9-12
BDP-N460
Checking Flow Drive section
BDP-N460 can play the BD-disc.
NO
Are the power supply voltages
(12V and 5V) to the Drive normal?
NO
To Drive Power flowchart
Yes
Yes
Replace the SATA cable, and check BDP-
N460 operates normally.
NO
Check the drive by drive test tool.
Drive is OK?
NO
Replace the Drive
Yes
Yes
Replace the SATA cable
To Main flowchart
BDP-N460 can play the DVD/CD-disc.
NO
Yes
㪙
㪘
㪘
㪙
BLX-104
DVD TEST DISC HLX-513
CD TEST DISC YEDS-18
Click on the first or last page to see other BDP-N460 service manuals if exist.