CTX EX951F - Abnormal Vertical Scanning; Abnormal Vertical Size; Side-Pin Cushion Distortion

19
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.
READJUST V-SIZE FUNCTION
VALUE CHECK THE IC601 PIN 6
ABOUT 12V
CHECK D601, R616 & SMPS
RELATIVE CIRCUIT
CHECK IC401 PIN 2,20
CHECK IC601 PIN 6 OUTPUT
ABOUT 45Vpp
CHECK IC401 PIN 4
RELATIVE CIRCUIT