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Troubleshooting



4.Troubleshooting

4-1 CheckpointsbyErrorMode................................................................4-2

4-2 MeasurestobetakenwhentheProtectionCircuitoperates...........4-17

4-3 Initialization&UpgradeMethods.......................................................4-18
.




Samsung Electronics 4-1
Troubleshooting



4-1 CheckpointsbyErrorMode

OscilloscopeSettingValues
Voltage/DIV 1V/div
TIME/DIV 500ms/div



4-1-1 NOPOWER

The power does not turn on.




Check for VDD(5V) No No
POWER PCB (SMPS)
MUIC1 Main PCB;
C72 (+) Check (5.6V)?
#14, 40, 55, 89

Yes Yes




Replace PCN1 wire Check for Circuit at SMPS
PCB; Fuse (F1), T2


Check for Check Normal No
No
POWER-SENSE(5V) at Main PCB; Voltage at SMPS PCB;
#14 of MUIC1 Q51 (Collector)

Yes Yes




Check pattern from PCN1 to Replace R51, R52, Q51, D51.
#22 of MUIC1 Check Resistance from GND
to #22 of MICOM (MUIC1)
If the short (0 ohm)
Replace MICOM (UIC1)
When Power On
No Replace VFD DRIVER IC
for Front PCB, Check for HIGH
Voltage(5V) at UIC2; #16 (UIC2)


Yes




Check for VFD1, 2 ~ 61, 62 No Check for Circuit at SMPS
VFD DC 5V PCB R13 (-34V)

Yes




Check for connector from Main
PCB to Front PCB; SCN2


4-2 Samsung Electronics
Troubleshooting




4-1-2 NODISCERROR




DISC Loading Error




Are Main and No
Check the Power
Deck Power OK?


Yes




Is the #40 FFC cable No
(between Main & Deck) inserted Re-insert FFC cable correctly
correctly?

Yes




1 No
Is the wave from of IDCN1 #25 normal? Change the Main PCB
(Main PCB)

Yes
Refer to wave pattern
image of Table 4-1.



Change the Deck




Samsung Electronics 4-3
Troubleshooting




XIC1




MUCN2
AIC1
1

DIC5
DIC7
DIC9




DIC6




IDE/SATA Page, 7-21


1




DJ3
N2
DJ4




MUIC1




1
C3
PCN1




IDCN1




C6 MAIN PCB Top Page, 6-11





4-4 Samsung Electronics
Troubleshooting


4-1-3 REMOTEDOES'TWORK




Remote control does not work




No
Remote Battery OK? Check the Battery


Yes




Is the FFC cable No
(between Front panel & Main) OK? Re-insert FFC cable correctly


Yes




1 No Check FIC1 or change the Front
FIC1 #1 Signal OK? Panel PCB

Yes
Refer to wave pattern
image of Table 4-2.



Change Main PCB MUIC1 #7 or
change the Main PCB




Samsung Electronics 4-5
Troubleshooting




1




FRONT Page, 7-3


1
FCN2




FIC3


FCN4



FCN1
FCN5
FBN2




FCN3

FIC1


1



FRONT PCB Top Page, 6-3





4-6 Samsung Electronics
Troubleshooting


4-1-4 AUDIOOUTPUT



No Audio




Check No Check connector CN2
Voltage at AMP PCB CN2 Check T1 (Trans)
is about 35V? Check BDL1, F1 (Fuse)

Yes




Check audio Check Voltage for No
No
channel at MIC1 (PS9829) ; 3.3V
PWM signal ; 2.5V (D5)

Yes Yes




Check Voltage at MIC1 DVDD Replace MIC1
(#4, #56, #65, #72, #84, #87, (Modulator IC PS9829)
#94..); 3.3V


Check for COIL
L1FL, L2FL, L1C, L2C, L1RL,
Check IC1B, IC1CW, No L2RL, L1FR, L2FR, L3RR,
IC1L, IC1R is broken? L4RR, L1BL, L2BL, L3BR,
L4BR
Yes (Open or Short?)




Replace Power stage IC




Samsung Electronics 4-7
Troubleshooting


4-1-5 NOPICTURE



No Picture




No No
Logo screen is OK? HDMI?

Yes Yes


No Logo (HDMI)



No No
BD/DVD Playback is OK? Component?

Yes Yes


No Logo (Component)




Change the Main PCB No Logo (Component)




4-8 Samsung Electronics
Troubleshooting


4-1-6 NOLOGOHDMI




No Logo HDMI




Video selection
No Check the Video select, cable
accords with cable connection and
connection, TV mode
TV mode?

Yes




1 No 2
Clock, Data, Sync from MIC1 Check MIC1 Power Input, GX1
(HRN1 ~ HRN6) oscillation, memory interface

Yes
Refer to wave pattern Refer to wave pattern
image of Table 4-3. image of Table 4-3.




#51 of HIC1 is High? No Check HCN1 connector and HDMI
(2V ~ 5V) cable connection

Yes




Data Output from HIC1? No Check HIC1 power input and
(#30, #31, #33, #34, #36, #37, peripheral devices
#39, #40)

Yes




HDMI Cable Error




Samsung Electronics 4-9
Troubleshooting




1

2

HCN1
ECON1




DIC1
HIC1 A
DIC2




DIC7
HDMI TX BLOCK Page, 7-15 GPIO Page, 7-19




DIC9




DIC6
1

1
GIC1




UCON2
DJ4




1 M


2



MIC1
2


DDIC3
IDCN1




DDIC6

<27MHz Crystal>
MAIN PCB Top Page, 6-11




PBIC1
4-10 DDIC5 DDIC1 Samsung Electronics
ON1
Troubleshooting


4-1-7 NOLOGOCOMPONENT




No Logo Component




Video selection
No Check the Video select, cable
accords with cable connection and
connection, TV mode
TV mode?

Yes




1 No
Video output from MIC1 MIC1 soldering error
(VC1, VC2, VC3)

Yes
Refer to wave pattern
image of Table 4-4-1.



2
No Check VIC2 soldering of peripheral
Video output from VIC2
(VR13, VR14, VR16) devices

Yes
Refer to wave pattern
image of Table 4-4-2.



Component Cable Error




Samsung Electronics 4-11
Troubleshooting




1




VIDEO OUTPUT Page, 7-20




VIC1
VIC2




1


MAIN PCB Bottom Page, 6-14


1 VC1 1 VC2 1 VC3
DIC3




UCON2
DIC4









4-12 Samsung Electronics
Troubleshooting




2




VIDEO OUTPUT Page, 7-20

N1




DIC1
2 AIC1
DIC2


MAIN PCB Top Page, 6-11
DIC7




2 VR13 2 VR14 2 VR16
DIC9




DIC6
GIC1







UCON2

DJ4




Samsung Electronics MUIC1
4-13
Troubleshooting


4-1-8 NOLOGOCOMPOSITE




No Logo Composite




Video selection
No Check the Video select, cable
accords with cable connection and
connection, TV mode
TV mode?

Yes




1 No
Video output from MIC1 MIC1 soldering error
(VC4)

Yes
Refer to wave pattern
image of Table 4-5-1.



2 No Check VIC1 soldering of peripheral
Video output from VIC1 devices
(VR15)

Yes
Refer to wave pattern
image of Table 4-5-2.



Composite Cable Error




4-14 Samsung Electronics
Troubleshooting




1




MUCN2
VIDEO OUTPUT Page, 7-20


1 VC4
VIC1
VIC2



1
VC4>
DIC3




UCON2
MAIN PCB Bottom Page, 6-14
DIC4








Samsung Electronics 4-15
Troubleshooting




2




VIDEO OUTPUT Page, 7-20


2 VR15

XIC1




MUCN2
2



AIC1


DIC5
DIC7




MAIN PCB Top Page, 6-11
DIC9




DIC6








4-16 Samsung Electronics
3
Troubleshooting



4-2 MeasurestobetakenwhentheProtectionCircuitoperates

When Power ON and `PROTECTION' Mark is displayed.



PROTECTION




AMP PCB CN2, BN1 No
Reconnect
Connection Check OK?


Yes




When CN2 is detached, No
Replace SMPS
Check SMPS (35V)

Yes




When BN1 is detached, No
Check MAIN PCB
Check PROTECTION

Yes




Check AMP PCB IC1L, IC1CW, Yes
Replace AMP IC
IC1R, IC1B is broken?

No




Yes
Check SPK OUTPUT SHORT? Check AMP PCB Pattern and Solder


No




Replace AMP PCB Ass'y




Samsung Electronics 4-17
Troubleshooting



4-3 Initialization&UpgradeMethods

4-3-1 MainF/WUpdateMethod


LANupgrade

1. Select "Upgrade Start", if there is the newest version, you can
start network upgrade.




2. If pressed "Start" previous step, update data are downloading.




3. Then update data are verifying.




4. After verifying the data, press "Yes".




4-18 Samsung Electronics
Troubleshooting




5. Firmware update is processing. It takes about 10 minute.
And make sure that do not turn off the power.




6. After update is completed, it will be turned off automatically.




7. When there is a problem to start network updating, please check
the LAN or network setup.




8. You can set the network environment manually.




Samsung Electronics 4-19
Troubleshooting


CDupdate

1. Insert update CD. It will check the firmware version.
It takes about 5 minutes.




2. After verifying the firmware version, the disc is ejected.
Then press "Yes" if the update CD you insert is a later one than
before.




3. Wait about 10 minutes.
And make sure that do not turn off the power.




ResetMethod
To reset the system HT-BD2 like the factory default, just press "STOP" button for 4~5 seconds on the "NO DISC"
status. And then you can see the word "INITIALIZE" on the VFD DISPLAY. And then, the system is going to be
turned off automatically. It is for resetting the MAIN FLASH




4-20 Samsung Electronics