- 3-4 -
A
RESET or Power On.
NO
NO
YES
NO
YES
NO
YES
YES
B
NO
NO
NO
YES
YES
NO
NO
YES
YES
YES
Show LOGO?
Flash Memory operates
properly?
Check connection lines between FLASH
& MT1389 and the FLASH access time
whether is suitable or not.
SDRAM works properly?
Check connection lines between
SDRAM & MT1389 and the SDRAM
is damaged.
MT1389 VIDEO outputs
properly?
Check the related circuit of MT1389.
Have TV signal output?
Check the filtering and amp circuit of
TV signal.
Check AV cable connection
to TV set.
Does Tray move
inside when it is not
at closed position?
Normal TROUT &
TRIN signals?
Check the load OPEN & CLOSE
switch
Normal TRCLOSE &
TROPEN signal?
Normal LOAD+ &
LOADsignal?
Check the cable connection
between main PCBA and loader.
Check the Tray control IO pins on
MT1389 & IP4504.
Check the Tray control amplifying
circuit on Motor driver.
Summary of Contents for XH-T9546
Page 1: ...DVD CD RECEIVER SERVICE MANUAL 2004 MODEL XH T9546 SERVICE MANUAL MODEL LGDVT418 CD R RW ...
Page 6: ... 1 5 SPECIFICATIONS ...
Page 7: ... 1 6 MEMO ...
Page 10: ... 2 3 3 FRONT CIRCUIT 1 2 ...
Page 11: ... 2 4 4 FRONT CIRCUIT 2 2 ...
Page 12: ... BLOCK DIAGRAM 2 5 2 6 ...
Page 13: ...2 7 2 8 SCHEMATIC DIAGRAMS FRONT SCHEMATIC DIAGRAM ...
Page 14: ...2 9 2 10 MICOM SCHEMATIC DIAGRAM ...
Page 15: ...2 11 2 12 I O SCHEMATIC DIAGRAM ...
Page 16: ...2 13 2 14 DSP SCHEMATIC DIAGRAM ...
Page 17: ...2 15 2 16 AMP SCHEMATIC DIAGRAM ...
Page 18: ...2 17 2 18 SMPS WIDE SCHEMATIC DIAGRAM ...
Page 19: ...2 19 2 20 POWER SCHEMATIC DIAGRAM ...
Page 20: ...2 21 2 22 WIRING DIAGRAMS ...
Page 21: ...2 23 2 24 PRINTED CIRCUIT DIAGRAMS MAIN P C BOARD COMPONENT SIDE ...
Page 22: ...2 25 2 26 MAIN P C BOARD SOLDER SIDE ...
Page 23: ...2 27 2 28 FRONT P C BOARD SOLDER SIDE FRONT P C BOARD COMPONENT SIDE ...
Page 24: ...2 29 2 30 POWER P C BOARD ...
Page 25: ...2 31 2 32 MEMO MEMO ...
Page 26: ... 3 1 1 Power check flow ELECTRICAL TROUBLESHOOTING GUIDE SECTION 3 DVD PART ...
Page 39: ... 3 14 FIG 7 2 DVD FIG 7 3 CD ...
Page 40: ... 3 15 FIG 7 4 CD FIG 8 1 DVD 8 FOCUS ON W VEFORM ...
Page 41: ... 3 16 FIG 8 2 CD FIG 9 1 9 SPINDLE CONTROL W VEFORM NO DISC CONDITION ...
Page 42: ... 3 17 10 TRACKING CONTROL RELATED SIGNAL System checking FIG 10 1 DVD FIG 10 2 CD ...
Page 44: ... 3 19 ADAT0 3 FIG 12 2 FIG 13 1 2 COMPOSITE VIDEO SIGNAL 13 MT1389 AUDIO OUTPUT TO PWM IC ...
Page 45: ... 3 20 FIG 14 1 14 AUDIO OUTPUT FROM PWM IC ...
Page 50: ...3 25 3 26 DVD PART SCHEMATIC DIAGRAMS MPEG SCHEMATIC DIAGRAM ...
Page 51: ...3 27 3 28 SERVO SCHEMATIC DIAGRAM ...
Page 55: ... 5 2 MODEL XHS T9546C 755 756 757 755 759 758 751 750 752 754 753 752 ...
Page 57: ... 5 4 MEMO ...
