Sony BDP-N460 Service Manual ▷ View online
9-5
BDP-N460
IFcon Section Flow Chart(1/2)
IFcon block
p
ower su
pp
ly
chec
k
UNSW3.3V voltage (+3.3V)
Is 3.3V output from IC301 pin4?
No
Input voltage
Is +5.8V input to IC301 pin5?
No
Is the fuse (PS301) blown?
No
To Power Supply (System) flowchart
㩷㩷㪰㪼㫊
Yes
Yes
Replace PS301
If symptoms do not improve, check for a
short on the circuit board
REG control voltage
Is +5.8V input to IC301 pin1?
No
Replace IC301
Yes
Replace R302
If symptoms do not improve, replace IC301
P_FAIL detection operation check
Check the P_FAIL voltage
No
Replace R1167 and check for +3.3V at
IC1104 pin1
If symptoms do not improve, replace IC1104
(P_FAIL detection)
No
Is +3.3V output from IC1104 pin1?
Yes
㪤㪸
㫀㫅㩷
㫌㫅㫀
㫋㩷
㫂㪼㫐
㩷㪺㪿㪼㪺㫂
Check of key voltage from main unit Key
Table (*) when key is pressed or not
pressed
No
Is the FFC from CN1104 disconnected?
(Other than the POWER key)
Is the harness from CN301 disconnected?
(POWER key)
Is the FL-199 harness from the power
supply disconnected? (POWER key)
Is there a problem with the mounting
condition of RB1101 or 1102?
Is there a problem with the mounting
condition of C1112, 1113, 1114 or 1115?
No
POWER: CN301 pin13(JL302) KEY0
STOP: CN1104 pin13(JL1145) KEY1
OPEN/CLOSE: CN1104 pin14(JL1146)
KEY2
PLAY: CN1104 pin15(JL1147) KEY3
Yes
Remote control operation check
Check the waveform when the remote
control button is not pressed
No
Check whether the FFC is disconnected
from CN1104. (Other than the POWER key)
No
Check of the 3.3V voltage
CN1104 pin17 and IC1103 pin24
Is there a problem with the RB1103
mounting condition?
Yes
Check of the waveform when the key is
pressed
In comparison with a normal waveform, is
the waveform of the voltage output
correctly?
No
Is the remote control that is used in the
inspection broken?
No
Does replacement of the FL/FR board result
in improvement?
No
Yes
Check whether the FFC is disconnected
from CN1104. (Other than the POWER key)
Yes
To FL/FR board Flow
㪁㩷
㪢
㪼㫐
㩷㪫
㪸㪹㫃
㪼
㪠㫅㫇㫌㫋
㪭㫆㫃㫋㪸㪾㪼㩿㪭㪀
㩿㪢㪜㪰㪇㪀
㪉㪅㪐㪇㩷㪄
㩿㪢㪜㪰㪈㪀
㪊㪊
㪇
㪇㪅㪏㪊㩷㪄
㪇㪅㪇㪇㩷㪄
㪢㪼㫐㪶㪦㪝㪝
㪄
䇺㪧
㪦㪮
㪜
㪩
㪢㪼㫐㪶㪦㪝㪝
䇺㪪㪫
㪦
㪧
䇻
㪄
䇺
㪦㪧
㪜
㪥
㪆㪚
㪣
㪦
㪪㪜
䇻
䇺
㪧
㪣
㪘㪰
䇻
㩿㪢㪜㪰㪉㪀
㩿㪢㪜㪰㪊㪀
㪢㪼㫐㪶㪦㪝㪝
㪢㪼㫐㪶㪦㪝㪝
㪄㪄
㪘
㪙
9-6
BDP-N460
IFcon Section Flow Chart(2/2)
Check of IFcon reset in
p
ut
p
or
t
Is the voltage of IC1103 pin6 "H"(3.3V)?
No
Is there a problem with the mounting
condition of R1112, C1108 or R1109?
Yes
㩷㩷㪰㪼㫊
Pcont output port check
Check of each power supply control port
when the power is ON
* Corresponding output
IC1103 pin20 PCONT3
IC1103 pin 30 PCONT_CORE
IC1103 pin28 PCONT1
IC1103 pin31 PCONT4
SW3.3V and SATA_1.2V output
CORE_1.1V output
DCSW3.3V output
DDR2_1.8V system output
Is the voltage at the "H" level(3.3V)?
No
Check for shorts at each port
No
All the ports go "H" within 2 to 10 ms, but
soon go "L"
No
Yes
Yes
Yes
Do the symptoms improve after checking the
soldering and pattern of IC1103?
No
Power supply output chec
k
Check the output of the corresponding
voltage
SW3.3V output
CORE_1.1V output
DCSW3.3V output
DDR2_1.8V output
SATA1.2V output
SW3.3V Short circuit operation check
No
To Power Supply (System) flowchart
No
When IC1103 pin20 PCONT3 has gone "H",
is the SW3.3V voltage output?
Yes
Replace IC1103 or replace the MB board
Yes
Check SYS
_
RST si
g
nal out
p
ut
Is IC1103 pin35 "H"(3.3V)?
The mounting condition of R909 and R941
are OK
No
Replace IC1103 and the MB board
Yes
Check the communication with the host
CPU (SYSCON_REQ signal check)
Do cyclical "H" and "L" communication
waveforms come to IC1103 pin36?
No
Is there a problem with the mounting
conditon of R1151 or 1164?
No
Do the symptoms improve after replacing
IC101?
No
Yes
Check the communication with the hos
t
CPU
(Serial communication si
g
nal check
)
Do cyclical "H" and "L" communication
waveforms come to IC1103 pin25, 26 and
27?
No
Is there a problem with the mounting
conditon of RB1103, R1131, R1171, R919,
R920, or R921?
No
Replace IC1103 or replace the MB board
㪘
㪙
9-7
BDP-N460
Audio section flowchart
Audio does not sound right
No
Video is output properly
Yes
To Video section flowchart
䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭
Yes
Is the FL display/LED display correct?
No
To Main flowchart
䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭
Yes
Is the drive operating properly?
No
To Drive flowchart
䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭
Yes
Is each power supply supplied to the AUDIO
Block?
No
To Power Supply (System) flowchart
CN801 pin1: +6V
CN801 pin3: -9V
CN801 pin5: +12V
䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭
Yes
Check the input of each power supply
No
Replace IC link
Q804 (Emitter): -8V
Q805 (Emitter): +12V
R860: +5V
When Q804 is defective: Replace PS802
When Q805 is defective: Replace PS801
When IC803 is defective: Replace PS803
䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭
Yes
Check the output of each power supply
No
When IC802 is defective, check the output of IC
3
No
To Power Supply (System) flowchart
IC305 pin4: +5V
䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭
Yes
Is an audio system digital signal input t
o
IC802?
No
If faulty, replace the MB board
IC802 pin1: MCLK
IC802 pin2: BCLK
IC802 pin3: DATA
IC802 pin4: LRCK
Yes
Are control signals input to IC802?
No
If faulty, replace the MB board
IC802 pin6: CSN
IC802 pin7: CCLK
IC802 pin8: CDTI
JL915: XAMUTE
IC802 pin5: PDN
Yes
Is a digital output (HDMI/Coax/Opt) signal
out
p
ut from each of the Audio out
p
u
t
No
If faulty, replace the MB board
Q804 (Collector): -8V
Q805 (Collector): +12V
9-8
BDP-N460
Video section flowchart
Reproduced video does not appear right
䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭
Yes
Is the FL display/LED display correct?
No
To Main flowchart
䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭
Yes
㪠㫊㩷㫋㪿㪼㩷㪻㫉㫀㫍㪼㩷㫆㫇㪼㫉㪸㫋㫀㫅㪾㩷㫇㫉㫆㫇㪼㫉㫃㫐㪖
No
To Drive flowchart
㩷㩷㩷㩷㪰㪼㫊
Check the input of each power
No
Replace the IC link
Q810 (Emitter):-8V
IC803 pin5: +6V
When Q810 is defective: Replace PS802
When IC803 is defective: Replace PS803
䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭
Yes
Check the output of each power
No
Check the control of each power supply
No
Check the control lines
Q810 (Collector): -8V
IC803 pin4: +3.3V
Q809 (Emitter): 3.3V
IC803 pin1: 5V
When Q809 is defective: Check
PCONT2
When IC803 is defective: Check
SW5VD
㩷㩷㩷㩷㪰㪼㫊
Yes
Replacement device
When Q810 (Collector) is defective: Replace Q810
When IC803 pin4 is defective: Replace IC803
Check -5V Power supply
No
Replacement device
IC804 OUTPUT: -5V
Replace IC804
䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭
Yes
Are video signals input to IC806
No
Check the writeing from IC101
Pin8 Y signal
Pin3 C signal
Pin10 Y signal
Pin12 Cb signal
Pin 14 Cr signal
Yes
Are control signals input to IC806?
No
Check the writeing from IC101
IC806 pin16 PS1 (XVMUTE +3.3V)
IC806 pin15 PS2 (XVMUTE +3.3V)
Yes
Is a video signal output from IC806?
No
Replace IC806
Yes
Is a signal output from each Video output
connector?
No
Check output resistors (R2822,R2818,R2819 and
R2820)
Check the pin jack block
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