Emerson 6420FE service manual Main 3/4 Schematic Diagram, L2401SCM3

Page 31

Main 3/4 Schematic Diagram

IF SIGNAL

VIDEO SIGNAL

AUDIO SIGNAL

CAUTION !

 

 

 

 

 

 

 

 

CAUTION: FOR CONTINUED PROTECTION AGAINST RISK

Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.

 

 

 

 

 

 

 

 

If Main Fuse (F601) is blown, check to see that all components in the power supply

 

 

 

 

 

 

 

 

OF FIRE, REPLACE ONLY WITH SAME TYPE 4A, 125V FUSE.

 

 

 

 

 

 

 

 

circuit are not defective before you connect the AC plug to the AC power supply.

 

 

 

 

 

 

 

 

ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE

4A/125V

 

Otherwise it may cause some components in the power supply circuit to fail.

 

MÊME TYPE DE 4A, 125V.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE :

The voltage for parts in hot circuit is measured using hot GND as a common terminal.

M4

N4

O4

P4

Q4

R4

MAIN 3/4

 

Ref No.

Position

 

 

 

 

 

 

 

ICS

 

 

 

 

 

 

IC31

P-3

 

 

 

 

 

 

IC601

O-1

 

 

 

 

 

 

TRANSISTORS

 

 

 

 

 

 

Q31

P-4

 

 

 

 

 

 

Q601

P-2

 

 

 

 

 

 

Q602

P-1

 

 

 

 

 

 

Q631

O-1

 

 

 

 

 

 

Q652

O-1

 

 

 

 

 

 

Q672

N-2

M3

N3

O3

P3

Q3

R3

Q673

N-1

Q681

M-2

 

 

 

 

 

 

Q674

N-1

 

 

 

 

 

 

Q682

M-1

 

 

 

 

 

 

Q696

O-2

 

 

 

 

 

 

CONNECTOR

 

 

 

 

 

 

CN691

Q-2

 

 

 

 

 

 

TEST POINT

 

 

 

 

 

 

TP300

N-4

 

 

 

 

 

 

VARIABLE RESISTOR

 

 

 

 

 

 

VR661

O-1

M2

N2

O2

P2

Q2

R2

 

 

 

 

 

 

 

*1 NOTE:

 

 

 

 

 

 

 

 

The Capacitor ( C643 ) is either type A or type B.

M1

N1

O1

P1

Q1

These two types are exchangeable and can be

between type A R1

 

 

 

 

 

 

 

equally used whichever the model is . The difference

 

 

 

 

 

 

and type B is shown in the table below.

 

 

 

 

 

 

C643

C642

JS642

 

 

 

 

 

Type A

0.01/250V

0.01/250V

Not Used

 

 

 

 

 

Type B

4700P/250V

Not Used

WIRE

7-7

7-8

L2401SCM3

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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 Clearance Distance Safety Check after ServicingLeakage Current Test 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 TweezersPin 1 of the Flat Pack-IC Is indicated by a mark InstallationPresolder Incorrect Instructions for Handling SemiconductorsGround for Human Body Ground for WorkbenchReference Notes in the Table Cabinet Disassembly InstructionsDisassembly Flowchart Disassembly MethodRear Cabinet Main CBA Rear CabinetCRT 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 InputFocus Adjustment Sub-Brightness AdjustmentPurity Adjustment Figures Convergence AdjustmentSystem BlockL2401BLIF IF/Video Block DiagramL2401BLA AudioCRT/H.V Block DiagramL2401BLP DiagramStandard Notes Schematic Diagrams / Cbas and Test PointsTolerance of Capacitors are noted with the following 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 DiagramIC PIN Functions Pin Signal Name FunctionIC111 TV Micro Controller Degaussing Coil Control White Balance AdjustmentJudgement AFT Voltage InputCabinet Exploded Views11-1 11-2 L2401CEX X-2 X-3 Tape Packing Tape 11-3 L2401PEX PackingComparison Chart of Models and Marks Mechanical Parts List20040405 12-1 L2401CA 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.
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