Goldstar FL-800K TROUBLESHOOTING

78

5V

5V

5V79

80

76

58

5V

5V59

60

20

YES

YES

OFF

PCTL
HRST

ON

YES

YES

YES

YES

YES

YES

YES

YES

NO

NO

NO

NO

NO

NO

NO

NO

NO

TROUBLESHOOTING

- 11 -

1. POWER PART

Turn power on.

IC402 Pin 1 input +5V(D1)

PN402, PN804 +5V(AII)
check?

PN402, PN804 Defective.

IC802, 805 Surrounding
circuitry defective.

á X401 defective.
á IC402 defective.

Pattern defective.

IC801, 803 defective.

IC402 defective.

IC401 defective.

á IC101 defective.

á PN402 defective.
á Pattern defective.

IC402 Pin 6 PCTL output?

Power P.C.B PCTL pattern?

IC402 Pin 2 HRST output?

IC401 Pic 17 Reset check.

OK

IC401 Pin 58, 59, 60, 20 Check?

IC101 (H8) Pin 78, 79, 80, 76 Check?

IC801, 803 check?
á Pin 1 +12V
á Pin 2 +5V

A

2-1



2-2



2-3



2-4



2-5



B

- 12 -

DOOR OPEN/CLOSE
CHECK?(LOADING)

Is rotate turret?

Is DISC play?

Is lead-in?

When laser does not light.

When laser lights.

Is audio output?

2. CD PART

YES

OPEN L

56

H

L

H

CLOSE

YES

YES

YES

YES

NO

NO

NO

NO

NO

- 13 -

2-1. DOOR OPEN/CLOSE PART(LOADING)

Door open/close?

IC112 Pin 5, 6 input?

á ZD 104(5.1V)?
á IC112 surrounding

circuitry check?

á CLOSE leaf s/w defective.
á IC101(H8) Pin 23, 24

defective.

á ZD104 defective.
á +12V-CD defective.

á IC112 defective.
á 2, 10 pattern defective.

PN102 defective.

Pick-up defective.

IC112 Pin 2, 10 Output?

Pick-up MOTOR?

OK

PN102 MOTOR input

defective?

- 14 -

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

NO NO

NO

NO

NO

NO

NO

NO

NO

YES

Is Rotation turret?

leaf S/W defective.

Limit S/W 0V(LOW) check?

IC103 Pin 14 output check?

IC101 defective

IC104 Pin 77, 78. 79 check?

IC101(H8) DATA, CLK, XLT

check?

IC111 Pin 2,10 output check?

PN104 input check?

PN103 conector check.

Pick-up check?

Pick-up defective.

OK

Down leaf S/W (PN102)0V

(LOW) check?

IC101(H8) Pin 49, 53, 21, 22

check?

2-2. TURRET PART

¥ IC102(H8)defective.
¥ IC102 Pin 49, 53,

21, 22 pattern
defective.

¥ IC103 Pin 22, 23,

24 input defective.

¥ IC102 defective.

¥ IC101 Pin 41, 42,

43 pattern

defective.
¥ IC104 defective.
¥ IC104 X-TAL Pin

53, 54 defective.

¥ IC 111defective.
¥ IC 111 Pin 5, 6

input defective.

¥ R111defective.
¥ IC103 defective.

IC110 Pin 11, 12 output

pattern defective.

IC 110 Pin 11, 12 output

check?

IC111 Pin 2, 10

output defective.