Roadstar LCD7080DVBT Service Manual Download Page 5 | Manualshive

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GENERAL ALIGNMENT INSTRUCTION

The Main PCB of Monitor Modification:

1. Input voltage is 6.8V-16V, input signal is test circuit BY 5418.

2. Adjust VR1 to get good performance.

. 4 .

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Summary of Contents for LCD7080DVBT

Page 1: ......

Page 2: ...fication 2 2 Block Diagram 4 3 General Alignment Instruction 5 4 Troubleshooting 7 5 Printed Circuit Board 12 6 Explode View 13 7 IC Block Diagram and Lead Identification 29 8 Schematic Diagram 39 CON...

Page 3: ...KHz 0dB V 1 4 0 2 1 25 1 4 Signal to noise ratio Infinity Zero dB l R 0dB 80 80 Dynamic range 1KHz 60dB 0dB 85 85 Power Consumption DC 9V Standby W 0 0 Rating W 10 10 SPECIFICATION HEADPHONE mW 0 3 2...

Page 4: ...Vx1827 7 INCH LCD PANEL A 8430 T DC DC M 1206 P HIGH VOLTAGE OSC 4 2 7 6 H V TRAN BLOCK DIAGRAM LCD MAIN PART 656 D0 656 D7 656 D0 656 D7 CCIR0 CCIR7 3...

Page 5: ...GENERAL ALIGNMENT INSTRUCTION The Main PCB of Monitor Modification 1 Input voltage is 6 8V 16V input signal is test circuit BY 5418 2 Adjust VR1 to get good performance 4...

Page 6: ...the unit Power button defective Replace power source Defective triode U4 Charge the position of Positive and negative Replace power button Replace U4 LS2822 2 No Picture Defective U9 SDRAM Replace U11...

Page 7: ...PRINTED CIRCUIT BOARD Monitor HV PCB Top View Bottom View 6...

Page 8: ...PRINTED CIRCUIT BOARD Main PCB Top View 7...

Page 9: ...PRINTED CIRCUIT BOARD Main PCB Top View 8...

Page 10: ...EXPLODED VIEW 9...

Page 11: ...IC BLOCK DIAGRAM DESCRIPTION Vx1827 10...

Page 12: ...IC BLOCK DIAGRAM DESCRIPTION Vx1827 11...

Page 13: ...IC BLOCK DIAGRAM DESCRIPTION A8430EEK 12...

Page 14: ...IC BLOCK DIAGRAM DESCRIPTION8D02D S8232 13...

Page 15: ...IC BLOCK DIAGRAM DESCRIPTION8D02D 24C02 14...

Page 16: ...IC BLOCK DIAGRAM DESCRIPTION8D02D CS4334 15...

Page 17: ...SCHEMA TIC DIAGRAMS TFT POWER 16...

Page 18: ...SCHEMA TIC DIAGRAMS VX1827 17...

Page 19: ...SCHEMA TIC DIAGRAMS PANEL 18...

Page 20: ...SCHEMA TIC DIAGRAMS CHANGE 19...

Page 21: ...SCHEMA TIC DIAGRAMS POWER 20...

Page 22: ...SCHEMATIC DIAGRAMS CT212 21...

Page 23: ...SCHEMA TIC DIAGRAMS AV OUT 22...

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