JVC MX-GA8 Service Manual

1-28 (No.MB080)
5.4 CD
COMMON
Check CD POWER
MB+=8V, DB+=12V, +5V/3.3V
Check OPEN / CLOSE
CLOSE : SW1=SW2=5V , OPEN : SW1=SW2=0V
POWER ON and CD FUNCTION
Does Roulette revolve
Is Roulette control OK?
Does SLED move to inner
Is focus search done properly?
Does laser ON during focus search?
Does Disc rotate
State of rotation is properly
Signal of RFO is properly
(#2,#3.#4.#5 of WIC101)
Does it read Disc
END
MB+/DB+.Check POWER LINE of Main Board
+5V : WIC301, Q301 +3.3V : Q302
Check OP/CL MOTOR & WIC401, WIC801
Check WIC402 & Roulette MOTOR
WIC402 : #6=5V
Check Roullette control sensor
CW105 #5(RL,SENSE) :
-Check oscillation of x201=16.93MHZ
-Check pin #19 of KB9226(WDCK)=88.2KHZ
-Check the signal of CW105(MCK,MDATA,MLT)
-Check the limit switch(#5,#6 of CW102)
-Check #26 of WIC101(SLO)
-Check #11,#12 of WIC301
-Check #7 of WIC101 (FRSH)
-Check #31 of WIC101 (FEO)
-Check #26,#27 of WIC301
-Check #37 of WIC101 (LD)
-Check TR Q101, R101
-Check Laser diode of pick-up
-Check #11,#12,#13 of WIC201
-Check #24 of WIC101 (SPO)
-Check #17,#18 of WIC301
-Check Spindle Motor of CD DECK
-Check #16,#17 of CW105 (SQCK,SQDT)
-Check #11,#34,#28,#29 of WIC101
-Check #1,#2 of WIC301
-Check parts C134,C135,R132,R133
-Check parts C106,C111,R112,R110
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
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No

JVC MX-GA8 Specifications

General

Brand	JVC
Model	MX-GA8
Category	Stereo System
Language	English