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BM-H2000PN
Notch filter
Color sync
(NTSC)
Oscilloscope
Signal generator
{Color bar
NTSC/PAL)
Signal generator
(Color bar)
10 KO resistor
Shorting fixture
TP-65
C117,
(NTSC NOTCH)
C122
(PAL NOTCH)
[Signal PwB]
©222(3.58APC)
[Signal PWB]
Item
Test equipment | Test points
peer
Adjustment procedure
locations
J.
Les
Comb fitter
| Osciltoscope
TP-64A,
Rt07 (COMB1
4. Set the menu Filter Select to Comb.
(NTSC)
Signal generator
TP-64B
LEVEL)
2. Connect oscilloscope to TP-64A.
(Color bar)
102 (COMBI
3. Alternately adjust R107 and T102 to minimize
PHASE)
the chroma component.
R147(COMB2
LEVEL)
|
|
R120(COMB2
{44+}
+4
PHASE)
|
|
[Signat PWB}
Minimize chroma component
. Connect oscillascope to TP-64.
. Alternately adjust R117 and R120 to minimize
- Set the menu Filter Select to Notch.
. Connect oscilloscope to TP-65.
. Adjust C117 to minimize the chroma:component.
. Supply a PAL color bar input.
- Connect a 10 KQ resistor between 16201 pin 13
. Connect a shorting fixture between IC201 pin 14
. Adjust to synchronize the color bar with C222.
. Remove the resistor and shorting fixture.
. Change the input signal, then return the color
the chroma component.
Minimize chroma component
Adjust C122 to minimize the chroma-component,
Minimize chroma component
and +B (12 V).
and ground.
bar. Confirm absence of sync disturbance.
(No.51042) 37
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