Pioneer PDP-5016, Руководство по обслуживанию

Страница: 56 / 70

- 10 -
2. Hitch Diagnosis Following
Display Condition
2-1. 3/11 or 4/11 of the screen doesn’t be
shown
(1) Confirm the power connector of X B/D is well plugged in
which is correspond to not showing screen.
(2) Confirm the connector that is connected between CTRL
B/D and X B/D correspond to not showing part.
(3) Replace relevant X B/D.
[ [
Relationship between screen and X B/D
Screen X B/D
Top Left of the Screen 3/11 <--> X Right Top B/D
Top Center of the Screen 4/11 <--> X Center Top B/D
Top Right of the Screen 4/11 <--> X Left Top B/D
Bottom Left of the Screen 3/11 <--> X Right Btm B/D
Bottom Center of the Screen 4/11 <--> X Center Btm B/D
Bottom Right of the Screen 4/11 <--> X Left Btm B/D
[ [
Screen Display Form
2-2. The screen doesn’t be shown as Data
COF
(Include not be shown part of Data COF quantity or a part)
(1) The problem between Data COF and X B/D is more
possible that the screen is not be shown as data COF.
(2) Confirm the connector of Data COF is well connected to X
B/D. Correspond to the part that screen is not showing
(3) Confirm whether the Data COF is failed and replace X B/D
[ [
Example of the screen display form
(Anything of the 7 Data COF can be shown beside below
pictures)
: All
: Partial
: not at all
[ [
How to examine Data COF IC
i) Top of the Screen
(4/11 or 3/11) ii) Bottom of the Screen
(4/11 or 3/11)
Display
Not display
ANODE Pattern (GND)
CATHOD Pattern and examine the Diode
to the pure or reverse direction.
1
GND 1
Measure the third resistance value
Resistance
2
2