HBD-NF620, HBD-NF720 — Sony Audio Service Manual (repair manual)

Model
HBD-NF620 HBD-NF720
Pages
6
Size
29.66 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio / SUPPLEMENT-1
File
hbd-nf620-hbd-nf720.pdf
Date

View Sony HBD-NF620 / HBD-NF720 Service Manual online

SERVICE MANUAL
SUPPLEMENT-1
9-893-453-81
Ver. 1.2  2012.07
File this supplement with the service manual.
File this supplement with the service manual.
Subject: Addition of TROUBLESHOOTING
HBD-NF620/NF720
AEP Model
HBD-NF620/NF720
UK Model
Taiwan Model
HBD-NF720
Mexican Model
HBD-NF620
HBD-NF620/NF720
2
TROUBLESHOOTING
1. Power 
check 
fl ow
The power is turned on.
Check that a sound is 
outputted normally.
Check that [Audio Settings] -
[Audio output] in the menu 
screen is “Speaker”.
Check that the output voltages of the 
SWITCHING REGULATOR are the following 
value.
CN301 pin 1:  12 V (A+12V)
CN301 pin 2:  12 V (UNSW12V)
CN301 pin 3:  12 V (FEUNSW12V)
CN301 pin 8:  6 V (UNSW6V)
Check that the following fuses are not damaged.
F5303/F5305/F5306/F5307/F1301
Check the following power control signal in the 
power on state. (Normally voltage: +3.3 V)
MB-149 board
IC6301 pin 36 to 38 (PCONT1 to PCONT3)
NG
OK
OK
OK
Check the related IC on the MB-149 board.
OK
OK
Check each voltage with reference to the 
schematic diagrams, and check that there is 
no problem in them.
OK
Check that a picture is outputted normally.
NG
Optimize the speaker settings.
NG
Check that the drive is 
operating normally.
– Continued on next page –
OK
Refer to the “2-1. Flow of drive section check” 
on page 6 on original service manual.
NG
OK
Check that harness is inserted 
normally.
When harness is inserted normally, 
exchange the SWITCHING 
REGULATOR.
Exchange the damaged fuse.
Exchange the complete MB-149 board, 
when the power is not turned on, even
 if you exchange fuses.
NG
NG
Power supply IC is damaged.
Exchange the power supply IC.
NG
Refer to the “2. Video check 
flow” on page 4.
NG
Exchange the IC6301.
Part No. 
Description
A-1857-997-A  IC   R5F3650KCDFB
  
(for 
SERVICE)
NG
HBD-NF620/NF720
3
Check that each power 
supply is supplied to the 
audio block.
Refer to the “1. Power check flow” on page 2.
NG
Check that a sound is 
normally outputted from 
each speaker.
OK
Check that each speaker is connected normally.
Front//Subwoofer
NG
Check that the signal is inputted into the 
following pins.
AMP board
IC3001 pin 39, 40, 48, 49
OK
Exchange the IC3001.
Part No. 
Description
6-718-105-01  IC   TAS5534DGGR
NG
Check that the signal is outputted from the 
following pins.
AMP board
IC3102  pin 10, 11 (SP FRONT R)
 
pin 16, 17 (SP FRONT L)
 
pin 2, 3, 8, 9 (SP SUBWOOFER)
OK
Exchange the IC3102.
Part No. 
Description
6-718-787-01  IC   STA516BE
NG
Perform and check 
[Audio Settings] - 
[Speaker Settings] - 
[Test Tone] in the menu 
screen, or reinsert the 
speaker cables.
NG
HBD-NF620/NF720
4
2. Video 
check 
fl ow
Check that the drive is 
operating normally.
Refer to the “2-1. Flow of drive section check” 
on page 6 on original service manual.
NG
OK
Exchange the complete MB-149 board.
OK
Check the solder of J1401.
NG
Check that each power 
supply is supplied.
Refer to the “1. Power check flow” on page 2.
NG
OK
Check that VIDEO OUT is 
outputted normally.
Check that there are no abnormalities in J1401.
NG
OK
Check that the input voltage 
of the following pin is 6 V.
MB-149 board
IC701 pin 5 (VIN)
Refer to the “1. Power check flow” on page 2.
NG
OK
Check that the output voltage 
of the following pin is 5 V.
MB-149 board
IC701 pin 4 (VOUT)
Exchange the IC701.
Part No.
6-705-337-01
NG
OK
Check that only the digital 
output (HDMI) is affected.
Check the settings on the menu screen.
NG
Description
IC TK11150CSCL-G
OK
Check that there are no 
abnormalities in CN750.
OK
Perform other analyses.
Exchange the CN750.
Note:
 When CN750 is exchanged, be careful of the 
 
quality of soldering enough.
Part No.
1-821-398-41
NG
Description
HDMI CONNECTOR 
 (HDMI 
ARC 
OUT)
Page of 6

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  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).