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SMPS
HB954/HB754/HB354
EBY34069159 REV 5.1
(EAX57454002)
2009. 03. 12
2-54
2-53
CIRCUIT DIAGRAMS
1. SMPS CIRCUIT DIAGRAM
WHEN SERVICING THIS CHASSIS, UNDER NO
CIRCUMSTANCES SHOULD THE ORIGINAL
DESIGN BE MODIFIED OR ALTERED WITHOUT
PERMISSION FROM THE LG CORPORATION. ALL
COMPONENTS SHOULD BE REPLACED ONLY WITH
TYPES IDENTICAL TO THOSE IN THE ORIGINAL
CIRCUIT. SPECIAL COMPONENTS ARE SHADED
ON THE SCHEMATIC FOR EASY IDENTIFICATION.
THIS CIRCUIT DIAGRAM MAY OCCASIONALLY
DIFFER FROM THE ACTUAL CIRCUIT USED. THIS
WAY, IMPLEMENTATION OF THE LATEST SAFETY
AND PERFORMANCE IMPROVEMENT CHANGES
INTO THE SET IS NOT DELAYED UNTIL THE NEW
SERVICE LITERATURE IS PRINTED.
1. Shaded( ) parts are critical for safety. Replace only
with specified part number.
2. Voltages are DC-measured with a digital voltmeter
during Play mode.
IMPORTANT SAFETY
NOTE :
Summary of Contents for HB954TB
Page 51: ...2 42 WAVEFORMS 1 SYSTEM PART 1 X500 27MHz 1 X501 25MHz 2 1 IC500 BCM7440P 2 ...
Page 53: ...2 44 3 VIDEO PART 1 100 FULL COLOR BAR CVBS_I 7 Y 8 Pb 9 Pr 10 7 9 10 8 ...
Page 54: ...2 45 4 VIDEO PART 2 100 FULL COLOR BAR CVBS 11 COMP_Y 12 COMP_Pb 13 COMP_Pr 14 11 14 12 13 ...
Page 55: ...2 46 5 HDMI PART HDMI_SDA 15 HDMI_SCL 16 HDMI_CLK 17 HDMI_DATA 18 18 17 15 16 ...
Page 56: ...2 47 6 MICOM AND MPEG I F PART T_TX 19 R_RX 20 20 19 ...
Page 57: ...2 48 MEMO ...
Page 80: ...2 93 2 94 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW ...
Page 81: ...2 95 2 96 MAIN P C BOARD BOTTOM VIEW ...
Page 82: ...2 97 2 98 2 SMPS P C BOARD TOP VIEW ...
Page 83: ...2 99 2 100 SMPS P C BOARD BOTTOM VIEW ...
Page 84: ...2 101 2 102 3 AMP P C BOARD TOP VIEW BOTTOM VIEW ...
Page 87: ...3 2 MEMO ...
Page 93: ...3 10 ...
Page 94: ...954B 954A 950 955 956 957 951 958 953 952 A900 4 3 PASSIVE SUBWOOFER SB94TB W 3 11 ...
Page 95: ...MEMO 3 12 ...
Page 117: ...4 22 MEMO ...
Page 118: ...4 24 4 23 CIRCUIT DIAGRAM LOADER HL 04P EBY51750301 REV 6 1 2009 01 20 ...
Page 120: ...4 27 4 28 PRINTED CIRCUIT BOARD DIAGRAMS TOP VIEW ...
Page 121: ...4 29 4 30 BOTTOM VIEW ...