20
6-6 ABNORMAL VERTICAL SCANNING
1. ABNORMAL VERTICAL SIZE
OK
NG
OK
NG
READJUST V-SIZE FUNCTION VALUE
RELATIVE CIRCUIT
CHECK VERT. OSC CIRCUIT
RELATIVE CIRCUIT
NG
CHECK THE IC601 PIN 7 ABOUT 40V
CHECK IC601 PIN 6 OUTPUT ABOUT
38Vpp
CHECK ZD601, ZD602 R626 & SMPS
CHECK IC401 PIN 22, 23, 24
CHECK IC401 PIN 12, 13
2. VERTICAL CENTER
NG
READJUST V-CENTER
CHECK IC101 PIN 9, 10
IC401 PIN 18, 19
6-7 SIDE-PIN CUSHION DISTORTION
NG
READJUST SIDEPIN
CHECK IC401, Q404, Q405, Q406
RELATIVE CKT.
6-8 POOR FOCUS
READJUST FOCUS CONTROL
NG
CHECK FOCUS CONTROL UNIT, FOCUS
LEAD WIRE, CRT SOCKET & CRT
READJUST V-SIZE FUNCTION
VALUE CHECK THE IC601
PIN3,2 ABOUT 13V
CHECK D601,D602,R606
R609& SMPS RELATIVE
CIRCUIT
CHECK IC601 PIN5 OUTPUT
VOLTAGE WAVE
CHECK IC401 RELATIVE CKT
CHECK IC101 PIN10,11 IC401
PIN18,19