Epson LX-86TM Spezifikationen PDF herunterladen (Seite 112)

REV.-A

5.3 UNIT REPAIR

This section indicates possible causes and checkpoints for different symptoms. The checkpoints include

waveforms and resistance values for normal operation. By referring to the checkpoints, determine the

detective component and perform the proper repair. Tables 5-5 and 5-7 have the following five columns:

. Problem:

Identify the problems listed in this column.

● Symptom:

Check symptoms against those given in this column.

● Cause:

Check problems against the causes listed in this column.

. Checkpoint: Use the instructions given in this column for troubleshooting.

● Solution: Make repairs according to the instructions given in this column.

5.3.1

ROCX

Board

Table 5-4 shows the main components of the

ROCX

Board. The unit repair procedure for the

ROCX

board is described in Table 5-5.

.—

—

Table 54. ROCX Board Parts List

Location

Part Name

Description

Part No.

Fuse

125V, 3.15A, UL, CSA

X502084020

Q21

Q25

- Q9

2SD1832C4

60V, 5A, 20W X3021 83209

2SD1833C4

60V, 7A, 25W X302 183309

2SD1647C3 5V,

IOOmA,

700mW

X302 164709

1 c,

SRI

ZD1

ZD2

ZD3

pPc494c

Switching Regulator

X440064940

7407 Hex. Buf. Drv.

O.C.

X4201 OOO7O

@D4364C

Static

RAM

X4001 43644

PPC78L05J

Switching Regulator

X440078054

/.LPD7810HG

CPU

X400078 101

E05A03 Gate array

Y448800001

HZS20-2TD

~0,5V,

150mA,

400mW

X3301 60309

HZS 15-3TD

AO.5V, 150mA,

400mW

X3301 60209

HZS4.7NB2-

1 TJ

4.7

~0.5V,

150mA,

400mW

X3301 60109

5-11

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