Mitsubishi Diamond Plus 93SB - Poor Focus

6-9
7. POOR FOCUS
POOR FOCUS
YES
CHECK
T302 3PIN H-DYNAMIC
PARBOLA WAVEFORM 500Vp-p
V-DYNAMIC PARABOLA
WAVEFORM 150V
p
-
p
NO
YES
ADJUST
T301 STATIC FOCUS VR AND
DYNAMIC FOCUS VR
NO
1. CHECK STATIC FOCUS AND DYNAMIC
FOCUS VR LINE TO CRT SOCKET.
2. CRT SOCKET OR CRT POOR.
CHECK
T302 H AND V
PARABOLA
WAVEFORM
NO
H-PARABOLA
TROUBLE IN
T302, C325, R341, T301
NO
H-PARABOLA
CHECK
U501 32 PIN
V-PARABOLA WAVE
0.47Vp-p
TROUBLE IN
Q312, C343, R356, R330
YES
NO
CHECK
U501 32 PIN
V-PARABOLA WAVE
0.47Vp-p
ADJUST V-FOUCS
OUTPUT 50 ~ 60%.
NO
YES