l
P-l F Circuit
C i r c u i t
. T u n e r
B power supply circuit for
the tuner
click noise is given
to the pin 1 of
does
1
noise appear on the screen?
Yes
Make the pin 9 of
be grounded
and check for the
voltage of
Normal
Check for the
voltage at
terminal.
N o
Check for the voltage at the
base, collector and emitter
of
Normal
Abnormal
I
I
I
I
I
B - B - - J
I
Summary of Contents for 8C221
Page 28: ...PRINTED WIRING BOARD ASSEMBLIES I Figure 18 PWB A Component Side 28 ...
Page 29: ...Figure 19 PWBA Wiring Side 29 ...
Page 30: ...Figure 20 FWB B Component Side 30 ...
Page 31: ...Figure 21 PWB B Wiring Side 31 ...
Page 32: ... PWBF0491CE ...
Page 33: ...Figure 26 PWB E Component Side Figure 27 PWB E Wiring Side 33 ...
Page 34: ...Figure 28 PWM A Component Side Figure 29 PWM A Wiring Side 34 ...
Page 40: ... I 8 VPP W 1 2 WXJ H I 3 3 4Vpp H 1 4 6 4Vpp U I I 51 WPP t 0 1 ...
Page 46: ...S H A R P 46 ...
