12
DP65
12
High Voltage limiter circuit operation check.
1. Turn off TV and connect jig as shown in Figure 2. Adjust
jig fully counter-clockwise for minimum resistance.
2. Set the AC input to 120V AC and turn on TV.
3. Confirm test pattern on CRT is a usable picture, then
slowly adjust jig until the picture disappears and TV shuts
down.
4. When the limiter circuit is operating properly, High
Voltage will be less than 37 kV at 1.62mA when TV shuts
down.
5. Turn off set immediately after checking circuit operation.
6. Unplug set for one minute to reset shutdown circuit.
Remove jig and voltmeter.
TECHNICAL CAUTIONS
(TH02)
RH19
RH17
Fig. 2. Power/Deflection P.W.B
Remove RH19 and connect 50K
Ω
VR jig as shown.
TH02
FBT
50K
Ω
VR
50K
Ω
VR
33K
Ω
Resistor
33K
Ω
AC CORD POLARITY
This check is based on the UL standard. Use the jigs
specified by the production technology section. The
GND side (wider blade) of the AC power cord should
be connected to
KK
C2
TABLE OF CONTENTS
X9
01
R
90
1
C901
L901
WHITE side
GND side
F90
1
2
PA
Tester
WHITE side =
1
Summary of Contents for 51F59A
Page 89: ...CIRCUIT BLOCK DIAGRAM TABLE OF CONTENTS 88 DP65 DP65G ...
Page 90: ...DP65 DP65G CONNECTION DIAGRAM TABLE OF CONTENTS 89 ...
Page 94: ...93 DP65 CPT P W B TABLE OF CONTENTS ...
Page 96: ...TABLE OF CONTENTS FINAL WIRING DIAGRAM TABLE OF CONTENTS TABLE OF CONTENTS DP65 95 ...
Page 97: ...TABLE OF CONTENTS FINAL WIRING DIAGRAM TABLE OF CONTENTS TABLE OF CONTENTS DP65 96 ...
Page 154: ...BACK TO TABLE OF CONTENTS PRINTED CIRCUIT BOARDS DP65 CPT PWB Solder side DP65 153 ...
Page 183: ......