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6-6 ABNORMAL VERTICAL SCANNING

1. ABNORMAL VERTICAL SIZE

READJUST V-SIZE FUNCTION VALUE

RELATIVE CIRCUIT

CHECK VERT. OSC CIRCUIT

RELATIVE CIRCUIT

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

READJUST V-CENTER

CHECK IC101 PIN 9, 10

IC401 PIN 18, 19

6-7 SIDE-PIN CUSHION DISTORTION

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

CHECK SMPS RELATIVE

CIRCUIT

CHECK IC401,Q408 RELATIVE

CKT.

Iiyama HM704UTC User Manual

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