Emerson 6420FE service manual IF/Video Block Diagram, L2401BLIF

Page 23

6-2

L2401BLIF

 

 

RF/IF SIGNAL

VIDEO SIGNAL

AUDIO SIGNAL

 

 

 

 

 

TU11

 

SF11

 

IC31

(IF SIGNAL PROCESS)

 

CF31

 

 

 

MAIN CBA

 

 

 

 

 

 

 

 

 

 

 

 

 

IF

11

SAW

16

VIF

VIDEO

4

4.5MHz

2

EQ

1

 

 

FILTER

 

 

 

17

AMP

DET

TRAP

AMP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CF32

 

 

 

 

 

AGC

1

 

 

 

 

VCO

 

4.5MHz

7

SIF

8

SIF

TO

SCL

4

 

 

 

 

 

 

 

 

 

 

 

AUDIO BLOCK

 

 

 

 

 

 

FILTER

AMP

 

 

 

 

 

 

 

 

 

SDA

5

 

 

 

 

 

 

 

 

 

 

 

 

EXT.CLK

8

 

 

 

 

 

 

LPF

 

VCO F/B

6

Q31

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RF

 

 

 

 

 

 

 

 

 

14

 

 

 

 

 

 

 

 

 

 

WF16

AGC

 

 

 

 

 

 

 

 

 

 

 

 

 

IF AGC DET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AFT

 

 

 

 

 

 

 

 

 

 

 

AMP

 

 

 

 

 

 

INPUT0

TO

 

 

 

 

 

 

 

 

 

18

AGC

SYSTEM

 

 

 

 

 

 

 

 

 

 

 

CONTROL

 

 

 

 

 

 

 

 

 

 

 

13

AFT-IN

 

 

 

 

 

 

 

 

 

 

 

BLOCK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11

 

 

 

 

 

 

 

 

 

 

 

 

 

IC111

 

 

 

 

 

 

 

 

 

 

 

 

 

TV MICON/VIDEO

 

WF2

 

 

 

 

 

 

 

 

 

 

/AUDIO/CHROMA

 

 

 

 

 

 

 

 

 

 

 

/DEFLECTION

 

11

14

 

 

 

 

 

 

 

 

 

58

SCL

 

 

 

 

 

 

 

 

 

 

 

 

56

SDA

 

 

 

 

 

 

 

 

 

 

 

 

32

 

 

 

 

VCXO

 

 

16

 

 

 

 

 

 

 

 

 

 

 

 

 

X301

 

 

 

 

 

 

CPN.

 

 

 

 

 

 

3.58MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TUNER

 

 

 

 

 

 

 

 

26

CPS.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WF1

 

 

 

 

 

 

 

 

 

 

LINE

 

 

 

 

 

 

 

JK701

24

 

 

 

 

 

 

 

 

VIDEO-IN

 

 

LUMINANCE

 

 

 

 

 

 

(FRONT)

 

 

PROCESS

 

 

 

 

 

 

 

 

 

CIRCUIT

 

 

 

WH301A

 

 

 

 

 

RGB MATRIX

OSD SW

RGB DRIVE

 

 

 

 

 

 

 

 

 

 

 

 

LPF

/COLOR CONT

CONTRAST

/CUT OFF

52

5

BLUE

TO

 

 

CPS.

CHROMINANCE

BRIGHTNESS

/H.V. BLK

51

4

GREEN

 

 

CRT/H.V. BLOCK

 

 

 

PROCESS

 

 

 

 

 

 

 

50

3

RED

WH301B

 

 

CPN.

CIRCUIT

 

 

 

 

 

 

 

 

 

 

 

 

 

29

 

 

 

 

CHROMA COMB

 

 

 

BASEBAND TINT

 

JK721

 

 

 

S-VIDEO-IN

 

 

C

Y

30

OSD

 

 

 

 

H-SYNC

53

ACL

 

 

PROCESS

 

 

CIRCUIT

46

H-DRIVE

TO

 

 

45

FBP-IN

 

V-SYNC

CRT/H.V. BLOCK

 

38

RAMP-OUT

 

 

61 S-SW

PROCESS

 

37

V-RAMP-F/B

 

 

CIRCUIT

 

IF/Video Block Diagram

Image 23
Contents 6420FE EWF2004 Table of Contents Important Safety NoticeDBµv AFT Pull In Range 10mV input MHz ±2.0 ±0.7 SpecificationsDescription Condition Unit Nominal Limit DBµvL6115IMP Important Safety PrecautionsSafety Precautions for TV Circuit Not be Above 0.5 mAL6115IMP Precautions during Servicing Leakage Current Test Safety Check after ServicingClearance Distance Pb Lead Free Solder How to Remove / Install Flat Pack-ICStandard Notes for Servicing Circuit Board IndicationsWith Soldering Iron With Iron WireMachine Masking Flat Pack-IC Tape TweezersPresolder InstallationPin 1 of the Flat Pack-IC Is indicated by a mark Incorrect Instructions for Handling SemiconductorsGround for Human Body Ground for WorkbenchReference Notes in the Table Cabinet Disassembly InstructionsDisassembly Flowchart Disassembly MethodCRT Rear CabinetRear Cabinet Main CBA TV Cable Wiring Diagram Service mode Electrical Adjustment InstructionsHow to set up the service mode +B AdjustmentGeneral Initial SettingPurity Check F0 AdjustmentBlack Stretch Control Adjustment SD Check ModeSoftware Reset Position AdjustmentSize Adjustment 10. V. Position AdjustmentTape Spec Cut-off AdjustmentWhite Balance Adjustment Mode InputPurity Adjustment Sub-Brightness AdjustmentFocus Adjustment Figures Convergence AdjustmentSystem BlockL2401BLIF IF/Video Block DiagramL2401BLA AudioCRT/H.V Block DiagramL2401BLP DiagramTolerance of Capacitors are noted with the following Schematic Diagrams / Cbas and Test PointsStandard Notes Test Point Information Wire ConnectorsHow to read converged lines Is not consistent hereL2401SCM1 Main 1/4 Schematic DiagramL2401SCM2 Main 2/4 Schematic DiagramL2401SCM3 Main 3/4 Schematic DiagramMain 4/4 Ref No Position Main 4/4 & CRT Schematic DiagramBL2700F01012-1 Main CBA Top ViewMain CBA Bottom View Q1531 Base CRT CBA Top ViewQ1521 Q1521 Collector Base Q1511 Q1511 Collector BaseWF4 WaveformsCollector WF9L2401WI Wiring DiagramIC111 TV Micro Controller Pin Signal Name FunctionIC PIN Functions Degaussing Coil Control White Balance AdjustmentJudgement AFT Voltage Input11-1 11-2 L2401CEX Exploded ViewsCabinet X-2 X-3 Tape Packing Tape 11-3 L2401PEX Packing20040405 12-1 L2401CA Mechanical Parts ListComparison Chart of Models and Marks 20040405 13-1 L2401EL Electrical Parts ListElectrolytic CAP .33∝F/50V M CE1JMASDLR33 20040405 13-2 L2401EL20040405 13-3 L2401EL ConnectorsICS 20040405 13-4 L2401ELTransistor 2SC2120-YTPE2 20040405 13-5 L2401EL20040405 13-6 L2401EL 20040405 13-7 L2401EL SwitchesRCA Jack 1P AV-8.4-9W 20040405 13-8 L2401EL6420FE/EWF2004 L2401UB/L2404UE

6420FE specifications

The Emerson 6420FE is a robust and versatile platform designed for a variety of industrial applications, particularly in process automation, manufacturing, and control systems. This model represents Emerson’s commitment to innovation and performance, catering to the evolving needs of industries that require reliable and accurate control solutions.

One of the main features of the Emerson 6420FE is its advanced processing capability. Equipped with a high-performance processor, the device ensures fast data processing and response times, which are critical in real-time control environments. This allows organizations to optimize their processes, enhance productivity, and improve operational efficiency.

Connectivity is another standout characteristic of the Emerson 6420FE. It supports a range of communication protocols, including Ethernet/IP, Modbus, and others, enabling seamless integration with various devices and systems. This flexibility ensures that the 6420FE can be easily incorporated into existing networks, facilitating smooth data exchange and interoperability among different automation components.

In terms of safety, the Emerson 6420FE is designed with features that ensure compliance with industry standards. It includes built-in redundancy options that enhance operational reliability and minimize downtime. Moreover, the device undergoes rigorous testing to meet safety certifications, providing peace of mind to operators and stakeholders.

The user interface of the Emerson 6420FE is intuitive and user-friendly, featuring an easy-to-navigate design that simplifies configuration and operation. This is paired with advanced diagnostic capabilities, allowing operators to troubleshoot issues effectively and maintain optimal system performance without significant downtime.

Another notable aspect of the Emerson 6420FE is its scalability. Whether in a small application or a large-scale industrial environment, the device can be easily scaled to meet varying demands. This adaptability makes it an ideal solution for companies looking to future-proof their automation systems.

In conclusion, the Emerson 6420FE is a powerful and reliable device that embodies Emerson’s commitment to innovation in process control and automation. With its advanced processing power, versatile connectivity options, robust safety features, user-friendly interface, and scalability, it stands out as an excellent choice for industries looking to enhance their operational efficiencies and ensure streamlined processes. As technology continues to evolve, the Emerson 6420FE remains a cornerstone in automation solutions, driving productivity and reliability in various industrial applications.