2-2
REPAIR INSTRUCTIONS
2-2
PILIPS MRD300 REPAIR CHART
MAIN UNIT REPAIR CHART
A
B
C
D
E
F
G
H
I
J
ALL FUNCTION
NO WORKING
VFD DISPLAY
NO SHOW
AND KEY FUNCTION
DVD
NO SOUND
POWER SUPPLY
NO WORKING
AUDIO OUTPUT
NO SOUND
AUX/TV IN
NO SOUND
TUNER
NO SOUND
EAR HEAD PHONE
NO SOUND
AUDIO LINE
NO OUTPUPT
DIGITAL LINE
NO SOUND
A
ALL FUNCTION
NO WORKING
CHECK ALL SYSTEM
ALL CABLE IS LOOSE
NO
OR BAD INT
PANEL STANDBY LED
SHOW WORKING
NO
RE-INSERT AND FIX
THE CABLE
YES
OR NOT
CHECK BACK POWER
PCB F901 BAD CAUSE
YES
CHANGE F901
BAD
DAMAGE
CHECK CN900 12V
+5V RIGHT
YES
CHECK REPAIR
CONTROL PCB IC206
YES
STANDBY CIRCUIT
REPAIR BETWEEN
NO
RB906 TO CN 900 AND
CN201 CIRCUIT
CN201 PIN13(PVCC)
CHECK IC902 PIN3=+5V
CHECK IC904 PIN 3=3.3V
CHECK REPAIR
NO
CHECKALL VOLTAGE
CIRCUIT
CORRECT
REPAIR MAIN PCB
BETWEEN IC100 TO
IC107/IC108 CIRCUIT
SHECK IC100 pin2
NO
pin3(osc frequency 27MHz)
pin51(121MHz)
3.3V AND 5VGIVE
NO
WORK
SWITCH POWER
SUPPLY CIRCUIT(see B)
B
rb201 and rb202CABLE
LOOSE OR BAD INT
CHECK CONTROL PCB
RB201 pin5=+5V
NO
RE-INSERT AND FIX
THE CABLE
YES
PCB POWER SUPPLY
NO
CIRCUIT
YES
CHECK IC100
IC400
NO
CHECK +5V POWER
CHECK TEST CN201
pin4/DATA
SCHECK VFD CONTROL PCB SECTION BAD CAUSE
CHECK TEST CN201
pin6=-24v pin7,8=AC2V
pin5=5V
pin2/CE pin3/CLK
YES
SUPPLY CIRCUIT
VFD DISPLAY
NO SHOW
AND KEY FUNCTION
YES
YES
DAMAGE
NO
Содержание MRD300/37
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