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6 abnormal vertical scanning, 7. side-pin cushion distortion, 8. poor focus – Philips 107B7 User Manual

Page 33

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17” CDT Color Monitor 107B7

33

7-6 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

READJUST V-SIZE FUNCTION VALUE

CHECK THE VOLTAGE OF IC101

RELATIVE CIRCUIT

CHECK IC101 PIN33, 34

CHECK THE IC601 PIN1 ABOUT 11.8V

PIN 4 ABOUT -12V

CHECK D601, C605


2. Vertical Center

NG

READJUST V-CENTER

RELATIVE CKT

CHECK IC101 AND IC601

7-7. Side-Pin Cushion Distortion

NG

READJUST SIDEPIN

CHECK IC101, Q406

RELATIVE CKT.

7-8. Poor Focus

READJUST FOCUS CONTROL

NG

CHECK FOCUS CONTROL UNIT,

FOCUS LEAD WIRE, CRT SOCKET & CRT

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