Text preview for : MANUAL SERVICE MX5203MS 7.pdf part of POLYTRON ( INDONESIA ) MX5203MS It used STV2286H , AN5891K , TDA8174 , STB9NK70Z-1 Complete Service Manual in RAR file type.sent by [email protected]
Back to : MX5203MS Service Manual | Home
Service Manual BML Myanmar
PT.Hartono Istana Teknologi
TROUBLE SHOOTING CHASSIS BML
THE UNIT CAN'T ON
THE UNIT CAN'T ON
CHECK SUPPLY VO=B+,8V,5V 5VA NOT OK
OK
CHECK BCL > 5V
CHECK BCL>5Vdc
OK
CHECK DEFLECTION
NOT OK
CHECK DIODE OUTPUT ON C525(+) +/- 300V
OK
OK
ON PRIMER SECTION ( IC 501 etc )
NOT OK
NOT OK
THE UNIT CAN'T ON
THE UNIT CAN'T ON
BCL>5V CHECK FBT FO +25V,+12V,+185V Heater Voltage
TROBLE ON PRIMER SECTION CHECK MOSFET IC501(Pin G,D,S)
OK
CHECK BIAS/GATE VOLTAGE > 4V NOT OK
NOT OK
NOT OK
OK
CHECK IC 301 PIN 48 NOT OK
CHECK REQUIREMENT OF IC 301 START UP NOT OK FULFILL REQUIREMENT OF IC 301 START UP
OK
CHANGE IC 301
6