4-4
ELECTRICAL TROUBLESHOOTING GUIDE
3. TRAY OPERATING IS ABNORMAL
Tray operating is abnormal
Tray open doesn’t work.
Check the loading motor
and front loading mechanism.
Is there tray
control signal input?
(LIC201 Pin41)
Is there Tray
control signal output?
(LIC501 Pin55)
YES
YES
Is there tray
drive voltage output?
(LIC201 Pin27,28)
NO
NO
NO
• Check the serial flash operation.
• Check the SATA communication between
B/end MPEG Chip.
• Go to reset or power check.
Check the connection from
LIC501 Pin55. to LIC201 Pin4.
Check the LIC201
YES
Is there tray
drive voltage output?
(Loading Motor)
NO
Check the connector LPF301
and FFC cable connection.
YES
YES
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 ...