Troubleshooting - JVC UX-S15B Service Manual

5.1 BLOCK DIAGRAM
FM ANT AM ANT
IC1
FM/AM/PLL/TUNER IC
X2 4.322MHz
+5V
Regulator
Q408,Q409
Tuner
Vcc Switch
+9V
Vcc
R/P Head Lch R/P Switch
Q202
Q201
Q253
Preamplifier For Double/
Q254
Cassette Tape Recorder
Q251
Q250
R/P Head Rch
Erase Head
AC
Bias
REC SW
Half SW
Photo out
Q218,Q219
SOL SOL
Vcc Switch
Cassette Motor
Q216,Q217
Q220
M
Motor
12V
Vcc Switch
Regulator
1-14 (No.MB630)
SECTION 5

TROUBLESHOOTING

RDS Module
IC2
RDS decoder IC
+5V
X2 4.5MHz
Vcc Switch
Q214,Q215
Tape Vcc
Switch
IC201
8-Bit Single Chip Microcontroller
X701
KEY
32.768MHz
+14V
Vcc
LCD DISPLAY
+14V
BACKLIGHT LED
Vcc
CD DOOR
Leaf SW.
IC501
SIGNAL SELECT SW.
EQ./E.VOL.
+9V
Vcc
IC701
+9V
Vcc
IC401
Regulator
X702
IR
8MHz
Q401
Vcc Switch
Q407
MCU
3.3V Regulator
Q410
Backlight
5V Regulator
Spindle Motor Sled Motor
+8V
M M
Vcc
Q403, Q404
CD Vcc
IC902
Switch
BTL.Power AMP. 4CH
16.9344MHz
Q218
SW
ASP & DSP DAC
JK302
Headphone Terminal
IC301
Powr AMP.
+14V
Vcc
Q420,Q421
Relay DriveR
+8V
Vcc
RY401
Relay
+14V
Vcc
Main Power
RECTIFIER
Transformer
Standby
RECTIFIER
Transformer
+9V
Vcc
CD MECHA
DA11
X901
IC901
L.Speaker
R.Speaker
AC INPUT