NEW LINK SYSTEMS 108837 5001 PLS LOGIC MODULE 1088375001PLS

NEW LINK SYSTEMS 108837 5001 PLS LOGIC MODULE 1088375001PLS

PLS LOGIC MODULE 1088375001PLS

PLS LOGIC MODULE 1088375001PLS

KLA-Tencor 655 650538 00 F0,VEXTA PH266-01GK,ORIENTAL MOTOR?2GK 15KA

FANUC A20B-0007-0090/08E BOARD

INDUSTRIAL SBC,PC,IPC,IN PENTIUM-4 CPU,FSB-860B BIOS COMPUTER BOARD WORKING

MDA SCIENTIFIC EXHAUST GAS MONITOR

IAI ACTUATOR CONTROLLER SCON-C-60I-NP-5-2

HP 75000 SERIES:C,E1420B 200Mhz/2ns Universal Counter

BECKHOFF MODULES BK1120 1EA WAGO 750-530?7EA

ALLEN-BRADLEY OEMAX?PLC NX70 NX70-CPU70P2 NX70-X32D NX70-Y32T

E.S.I P/N 132183 REV:J

OMRON SYSMAC CS1G PROGRAMMABLE CONTROLLER CPU44-V1 PLC SET AD002 DA002 SCU21-V1

SIEMENS SIMATIC MODULE ET 200B-32DI

PLUSTEK LED CONTROLLER PTS-D5012D-RS232

RENISHAW RCH22 Y30D16

Schneider 140CPS11100 NIB

OPTICAL LIGHT TIGHT?I/C PCB BOARD 03-17393-00

SANYO DENKI MOTOR 63BM007FXE00

YASKAWA MP930 JEPMC-IO350,JEPMC-10350 VER B0 PLC

YASKAWA SERVOPACK POWER SUPPLY JUSP-ACP07AA

MMT MICRO MOTION TECHNOLOGY X.Y.Z. STAGE?#2

MMT MICRO MOTION TECHNOLOGY STAGE M1-637-L1

PULSTEC LAND PRE-PIT?DECODER 2 (DDU-S/A)?PSB021DD-000-0 BOARD

ROCKWELL SAMSUNG MULTI AXIS CONTROLLER MAC-C0202R

MMT MICRO MOTION TECHNOLOGY X.Y.Z. STAGE?M1-630-R1 WITH A VERTICAL STAGE.

GOLDSEC PLC M2NCPU,?COMPATIBLE WITH MITSUBISHI M2NCPU

AB,ALLEN-BRADLEY PLC-5/40 1785-L40B /C,?MODULE/ WORKING

我部从年开始，分步进行了各频道电视发射机的全固态化更新换代工作，经过多年的运行，早期引进的全固态电视发射机已经逐步进人故障多发期。现将其中北广型双通道全固态电视发射机因图像变频盘故障引发输出功率降低的检修总结如下，与广大同行交流，仅供参考。发射机故障位置的分析与判断我部于年引进了一部北广产通道全固态电视发射机，该机用于*一套的无线转播。该部发射机在工作过程中发生输出功率降低的现象，发射机表头输出功率指示从正常刻度处下降到左右。
　　针对发射机输出功率的下降，我们首先对机器面板上激励级图像变频器中的电位器进行了调整，尝试通过调节它来增大发射机的功率输出，但发现此时几乎无法增大发射机的功率输出，即发射机此时zui大输出功率就在W左右，功率再也上不去了。根据此现象，我们组织有关人员进行了检修。根据以往的经验，检修人员首先检查了该部发射机此时六只末级功放模块工作电流的大小情况，通过检查，我们发现伴音末级功放模块的工作电流基本正常，而图像推动模块以及四只图像末级功放模块的工作电流均比原始记录要小得多，说明发射机的输出功率确实是下降了，并且问题可能在图像通道上。但通过对四只图像末级功放模块工作电流均同步下降的现象进行分析说明，故障的原因可能在激励器或图像推动模块中，是由于激励器或者图像推动模块的输出信号增益不够，从而导致了发射机输出功率的不足。
　

ESI CKA 73435 D ILLUMINATOR CONTROL MODULE II,PII-15298A PCB 73434 B BOARD

OMRON C500-CT012 3G2A5-CT012 COUNTER UNIT

GE FANUC IC693CPU350-CG CPU MODULE 32K USER MEMORY

MJ71UC24 COMMUNICATION MODULE COMPATIBLE WITH MITSUBISHI MJ71UC24 TESTED WORKING

TAKENAKA TAKEX WIDE SENSOR SS20-TR28 LOT OF 2

MITSUBISHI FX1N-60MT PROGRAMMABLE CONTROLLER

Mitsubishi A2USCPU CPU UNIT NNB

PULSTEC LD READ/WRITE 2 BOARD OPA-081-00

PULSTEC 4CHANNEL AGC BOARD2 PSB017DD-000-1 BOARD

CD/DCD DLV V3.0 BOARD

THK KR33 LM GUIDE ACTUATOR,KR33A LINEAR MOTION STAGE #1

RELIANCE AUTOMAX 6011 PROCESSOR MODULE 57C431,804113-R J-3650

SIEMENS SITOP POWER 10,DC POWER SUPPLY 6EP1434-2BA00

MITSUBISHI MELSEC INPUT UNIT AX81C PLC

LEITZ WETZLAR LENS ∞/- PL FLUTAR 10X/0.25 D

BECKHOFF BK5220 DEVICENET KL1184[4],KL2184,KL4022[3],KL3054[2],KL9010

MITSUBISHI PLC FX2N-64MR-ES/UL #1

RKC INSTRIMENT FAREX SR MINI SYSTEM M-PCP-A-14N-M*AB H-TIO-B-FK09-D*NN TSRM-2(8)

DAIICHI DENTSU SAN-12II AXIS CONTROLLER

ORIENTAL MOTOR BERGER LAHR 5-PHASE DRIVER SPD5520

ORIENTAL MOTOR CONTROL PACK SS32-SSSD LOT OF 7