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BM-H2000PN
ADJUSTING STEP
Item
Test equipment ; Test points
eet
Adjustment procedure
BI voltage
Voltmeter
TP-B1
R038 (B1 adj)
1. Set power supply voltage to 90 V.
check
Variable
TP-E
[Power PBW],
2. Set contrast and bright to minimum and produce
transformer
a black screen.
3. Connect voltmeter between TP-B1 and TP-E.
Switch on power.
4. Adjust R038 (B1 adi) to set the Bt voltage to
85.0 + 0.2V.
5. Set the power supply voltage to 132 V.
6. Check for B1 voltage of 85.0 + 0.2 V.
7. Return the contrast and bright controls to the
detent positions.
High vottage | High voltage meter
1. Set the Ext Syne switch to Ext.
cheek
Signal generator
2. Connect a synchronization signal to Ext Sync.
{All-black signa!)
3. When the raster appears, reduce the bright
control.
4. Connect the high voltage meter to the anode
and check for 24.0 - 25.0 KV.
. Return the Ext Syne switch to Int,
v.deflection
Signal generator
DO2(NTSC V
Pertorm after purity adjustment.
center
(Resolution pattern)
SHIFT)
Adjust deflection yoke inclination.
[SERVICE MENU} | 1 . At service menu, set 002 to 32.
R416(V CENTER)
. Adjust R416 (V phase) to align the picture
[Deflection PWB}
center with the CRT center.
+
Screen
Oscilloscope
TP-SC
R313 (SCREEN)
. Connect oscilloscope to TP-SC.
Signal generator
[Deflection PWB]
. . Adjust R313 (Screen) to set the screen voltage
(Color bar)
fo 450 + 10 V.
Focus
Signal generator
- Adjust the Focus VR for optimum focus where
(Resolution pattern)
moire is not apparent.
. . Darken the picture and and adjust the focus by
turning counter-clockwise from the position
where focus is poor.
3. Alternately repeat the above steps to obtain the
'optimum position.
'© Focus can.be adjusted easily by displaying the
menu.
ee
H frequency | Signal generator
DO6(H SHIFT)
1, At the service menu, set DO6 to 32.
(Resolution pattern)
[SERVICE MENU] | 2. Set $501 (H Free SW} to Free.
$501
3. Adjust screen syne with R603.(H Hold).
(H FREE SW)
4, Set S501 (H Free SW) to Normal.
R503(H HOLD)
5, Change the signal, then retum the previous
[Deflection PWB]
signal. Confirm absence of sync disturbance.
H center
'Signal generator
DOG(H SHIFT)
1. At the service menu, set DOG to 32.
(NTSC)
(Resolution pattern)
[SERVICE MENU] | 2. Agjust R582 (H Phase) to align the picture
R582(H PHASE)
center with the CRT center.
[Deflection PWB]
(No.51042} 35
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