Dell D825TM Manual de servicio - Página 15

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1. Color Monitor

5-2. CIRCUIT BOARDS LOCATION

5-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS

Note:

• All capacitors are in µF unless otherwise noted. pF: µµF

50 WV or less are not indicated except for electrolytic.

• Indication of resistance, which does not have one for rating

electrical power, is as follows.

Pitch: 5 mm

Rating electrical power 1/4 W (CHIP: 1/10 W)

• All resistors are in ohms.

•

: nonflammable resistor.

•

: fusible resistor.

∆

•

: internal component.

•

: panel designation and adjustment for repair.

• All variable and adjustable resistors have characteristic curve B,

unless otherwise noted.

•

earth-ground.

•

earth-chassis.

•

The components identified by

diagram have been carefully factory-selected for each set

in order to satisfy regulations regarding X-ray radiation.

Should replacement be required, replace only with the

value originally used.

• When replacing components identified by ], make the necessary

adjustments by using RV501 ([) as indicated. (See page 12)

Note: The components identified by shading and

mark

are critical for safety. Replace only

with part number specified.

Note: Les composants identifies per un trame et une

marque

sont critiques pour la securite. Ne les

remplacer que par une piece portant le numero specifie.

[

in this basic schematic

— 18 —

— 15 —

•

When replacing parts shown in the table below,

be sure to perform the safety related adjustment.

D - BOARD

Part Replaced ([)

RV501

Part Replaced (])

RV501, T501, R545, R546, R548,

R550, R547, R549, R552, D517,

IC605, IC901, C540, C542, C544,

C541, C535, IC501, C558, R567,

R564, C555, C553, C554, C561

•

All voltages are in volts.

Readings are taken with a 10 ΜΩ digital multimeter

•

Readings are taken with a color-bar signal input.

•

Voltage variations may be noted due to normal

production tolerances.

•

: Cannot be measured.

•

Circled numbers are waveform references.

•

: B +bus.

•

: B - bus.

D825TM