Read Sony KV-13FS100 Service Manual online
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KV-13FS100/13FS110/14FV300
3-1-3. HOLD-DOWN READJUSTMENT
If the setting indicated in Step 2 of Hold-Down Operation ConÞ rmation
cannot be met, readjustment should be performed by altering the
resistance value of R565 component marked with X.
cannot be met, readjustment should be performed by altering the
resistance value of R565 component marked with X.
+
IABL
ABL
T585
FBT
range
-
amPmeter
3.0 mA DC
A
3-2. B+ VOLTAGE CONFIRMATION AND
ADJUSTMENT
Note: The following adjustments should always be performed when
replacing the following components, which are marked with Y on the
schematic diagram on the A Board:
replacing the following components, which are marked with Y on the
schematic diagram on the A Board:
A BOARD:
IC604, PH602
1. Using a Variac, apply AC input voltage: 130 + 2.0 / - 0.0 VAC.
2. Input a DOT pattern at Q.C.
3. Set the PICTURE and the BRIGHTNESS controls to minimum.
4. ConÞ rm the voltage of A Board between TP-23 & Ground is <136.6
2. Input a DOT pattern at Q.C.
3. Set the PICTURE and the BRIGHTNESS controls to minimum.
4. ConÞ rm the voltage of A Board between TP-23 & Ground is <136.6
VDC.
5. If step 4 is not satisÞ ed, replace the components listed above, then
repeat Steps 1–3.
SECTION 3: SAFETY RELATED ADJUSTMENTS
3-1. X R565 CONFIRMATION METHOD (HV
HOLD-DOWN CONFIRMATION) AND
READJUSTMENTS
READJUSTMENTS
The following adjustments should always be performed when
replacing the following components which are marked with Y on the
schematic diagram:
replacing the following components which are marked with Y on the
schematic diagram:
Part Replaced ( )
Adjustment ( )
DY, T585, CRT, IC001, IC561,
C507, C508, C506, L511, L510,
C588, L588, C566, C561, C563,
D567, D568, D566, R567, R568,
R565, R566, R562, R563, R561,
R528....................A Board
C507, C508, C506, L511, L510,
C588, L588, C566, C561, C563,
D567, D568, D566, R567, R568,
R565, R566, R562, R563, R561,
R528....................A Board
HV HOLD-DOWN
R565
R565
3-1-1. PREPARATION BEFORE
CONFIRMATION
1. Using a Variac, apply AC input voltage: 120 +0, -0.3 VAC.
2. Turn the POWER switch ON.
3. Input a white signal and set the PICTURE and BRIGHTNESS
2. Turn the POWER switch ON.
3. Input a white signal and set the PICTURE and BRIGHTNESS
controls to maximum.
4. ConÞ rm that the voltage between C566 (+) or TP30 and ground is
more than 105 VDC.
3-1-2. HOLD-DOWN OPERATION
CONFIRMATION
1. Connect the current meter between Pin 11 of the FBT (T585) and
the PWB land where Pin 11 would normally attach (See Figure 1
on the next page).
on the next page).
2. Input a dot signal and set PICTURE and BRIGHTNESS to
minimum: IABL = 100 ± 100µA.
3. ConÞ rm the voltage of A Board TP-23 is 135.6 ± 1VDC.
4. Connect the digital voltmeter and the DC power supply via Diode
4. Connect the digital voltmeter and the DC power supply via Diode
1SS119 to C566 (+) and ground (See Figure 1 on next page).
5. Increase the DC power voltage gradually until the picture blanks
out.
6. Turn DC power source off immediately.
7. Read the digital voltmeter indication (standard < 120VDC).
8. Input a white signal and set PICTURE and BRIGHTNESS to
7. Read the digital voltmeter indication (standard < 120VDC).
8. Input a white signal and set PICTURE and BRIGHTNESS to
maximum: IABL = 820 ± 100µA.
9. Repeat steps 4 to 7.
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