Dell 21N21E2 service manual Sound AMP

Page 29

10ms

10V

35

20µs

10V

36

20µs

5V

37

2µs

200V

38

20µs

50V

39

WAVEFORMS

20µs

50V

40

20µs

50V

41

SOUND AMP

2ms

0.5V

43

0.2ms

5V

45

NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

H-3

Image 29

Contents Colourtelevision Servicing Notices on Checking HOW to Order PartsInsulation Check Procedure Contents System General SpecificationsA3-2 A3-3 A3-4 A3-5 Removal Disassembly InstructionsInstallation Removal and Installation of Flat Package IC B2-2 Confirmation of Hours Used Service Mode ListWhen Replacing Eeprom Memory IC Constant Voltage Electrical AdjustmentsVCO Coase L1, VCO Fine L1 AGC VoltageHorizontal Position White BalanceVertical Size Vertical POSITION/VERTICAL LinearityNO. Function Contrast CentPurity Static Convergence Rough AdjustmentStatic Convergence Dynamic ConvergenceMain PCB CRT PCBBlock Diagram Printed Circuit Boards MAIN/CRT Inserted Parts Bshort Printed Circuit Boards MAIN/CRT Chip Mounted PartsAB6 SZPU8O MszpOB6D V7ED7YNXW SZP7OC8A XC7CXC6B SZP SZP XC6COT8 OT7C4A OC9B ZO C4CBD E4BQ8C TQM SZPPA6B YTQOA7C OA8AWaveforms 21PIN/AV SW Sound AMP CRT PCB Assy Mechanical Exploded ViewMechanical Replacement Parts List TSB P/N Resistors Electrical Replacement Parts ListJ2-2 CS0RF04L5Z CapacitorsJ2-4 Diodes ICS SwitchesTransistors Coils &TRANSFORMERSMiscellaneous Variable ResistorsBoard Assemblies