Samsung
Electronics
4-29
Troubleshooting
4-1-11 Disc skips or freezing
All Media
(BD/DVD/CD) NG?
Yes
No
Only BD NG?
No
Disc skips or freezing
Change the MAIN PCB
Check Power
PiC1 (3.3V), L1112 (1.2V),
IC23 (5V)?
No
SMPS Check
No
Check the clock at
X-TAL1 25MHz?
Yes
Check U100's phreperial part
like soldering etc.
Yes
Change the MAIN PCB
No
Q3 Emitter
Voltage check
Q2: DVD, Q1:CD
4V ~ 6.5?
Yes
Change the DECK
No
RFIP Check?
Signal level OK?
BD: over 400mV
DVD: over 200mV
CD: over 200mV
Yes
Change the DECK
Change the MAIN PCB
No
Only DVD NG?
No
Only CD NG?
Yes
Refer to image of
Fig. 4-14.
Refer to image of
Fig. 4-15.
Refer to image of
Fig. 4-16.
Summary of Contents for HT-BD1255
Page 31: ...Samsung Electronics 4 5 Troubleshooting AMP page 7 5 C O N 1 AMP PCB Top page 6 9 Fig 4 1 1 1...
Page 32: ...4 6 Samsung Electronics Troubleshooting AMP page 7 5 Fig 4 2 1 2 2 2 2 2 2...
Page 36: ...4 10 Samsung Electronics Troubleshooting AMP page 7 5 UPIC1 AMP PCB Top page 6 9 Fig 4 3 1 1 1...
Page 37: ...Samsung Electronics 4 11 Troubleshooting AMP page 7 5 Fig 4 4 1 2 2 2...
Page 39: ...Samsung Electronics 4 13 Troubleshooting AMP page 7 5 Fig 4 5 1 3 3 3 3 3 3...
Page 62: ...4 36 Samsung Electronics Troubleshooting F W Update via Network...
Page 96: ...6 6 Samsung Electronics PCB Diagram 6 4 KEY PCB Top 1 2 TIC1 PCON2 VCON2 TCON...
Page 98: ...6 8 Samsung Electronics PCB Diagram 6 5 KEY PCB Bottom...
Page 101: ...Samsung Electronics 6 11 PCB Diagram 6 7 AMP PCB Bottom TP2 CON1 J3 AIC7 AIC8 AIC9...
Page 102: ...6 12 Samsung Electronics PCB Diagram 6 7 1 Test Point Wave Form TP2...
Page 105: ...Samsung Electronics 6 15 PCB Diagram 6 8 2 Test Point Wave Form TP6 TP5 TP7 TP8 TP9 TP10...
Page 107: ...Samsung Electronics 6 17 PCB Diagram 6 9 1 Test Point Wave Form TP7 TP8 TP9 TP10...
Page 108: ...6 18 Samsung Electronics PCB Diagram 6 10 SMPS PCB Top CN3 CN2...
Page 109: ...Samsung Electronics 6 19 PCB Diagram 6 11 SMPS PCB Bottom CN3 CN2...
Page 110: ...6 20 Samsung Electronics MEMO...