Genius TVB-S201 PRO k. Check U1 RAMCLK Signal, Service Manual, U1 PIN136, Version, Page

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Service Manual

k. Check U1 RAM_CLK Signal

Version 1.0

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Contents TVB-S201 PRO Service ManualINTRODUCTION Table of ContentsBlock Diagram Testing Proceduresb. Software c. Block DiagramChapter 1. INTRODUCTION a. Hardwarea. Testing flow chart Chapter 2. Testing ProceduresREPLACE Y301,U301 A T Check X1 X’TAL signal T Check OSC signal TCheck Y301 X’TAL signal T Check U1 CLK signal T END REPLACE X1,U22 REPLACE X2,U5,U1L34 PIN1 b. Check VCC +5VREG2.PIN c. Check REG2 Pin 2 SignalREG5 PIN2 d. Check REG5 Pin 2 SignalREG3 PIN2 e. Check REG3 Pin 2 SignalREG4 PIN2 f. Check REG4 Pin 2 SignalU22 PIN26 g. Check X1,U22 Pin 26 X’TAL SignalU1 PIN41 U5 PIN62 h. Check X2 Pin 3,U5 Pin 62,U1 Pin 41 OSC SignalC322 PIN1 i. Check Y301 X’TAL SignalU1 PIN58 U5 PIN66 j. Check U1 CLKSAA SignalU1 PIN136 k. Check U1 RAMCLK SignalChapter Troubleshooting GuideChapter 4. Removal and Replacement Parts number Chapter 6. ToolsParts list Description