JVC TH-C90A Service Manual page 48

<Subwoofer section> (For TH-C60)
Amplifier section
L_IN
R_IN
SL_IN
SR_IN
RY271
C_IN
IC201,IC202
SW_IN
SYSTEM POWER
RY273
AMP
P.ON_SIG
CONN.
RELAY
Q2101,Q2201
PROTECT Q2301,Q2401
Q2501,Q2601
PROTECTOR
Q2701 to Q2703
POWER_CTL
Q2709 to Q2711
POWER CTRL
CN273 CN272
CN502 CN372
Mother section
PROTECT DC_DETECT
Q523 to Q525
PROTECTOR
SP_RELAY-
Q603
Q604
iPROTECT
SP RELAY
POWER_CTL
IC601
MICON
Q542
LOW VOLTAGE
DETECTOR
RESET
P.ON_SIG
Q501 to Q505
POWER CONTROL
& PROTECTOR
Used for Area suffix UP/UF
RY101 Used for Area suffix UG/US/UY/UW/UX
RELAY
S901
VOLTAGE SELECTOR
AC IN
J2702
FLOUT
FROUT
to
FCOUT
SLOUT
SR_SIG
SROUT
SW_SIG
SP_RELAY-
DC_DETECT
IC301
AMP.
IC302
AMP.
AD_SL AD_L
AD_C AD_R
CN271
CN501
TO SW
SW_SIG
SPEAKER
SR_SIG
IC303
AMP.
AD_L
AD_R
AD_SL
SWin
AD_C
SRin
Q3702 to Q3704
FAN
FAN ON
FAN MOTOR
MOTOR
DRIVER
D561
LED
POWER
LED
+/-7V
D165,D166
+/-7V_REG.
+/-VH+/-VL
+5V
D151, D152
Q152
DIODE
5V_REG.
BRIDGE
CN151
CN152
T101
POWER
TRANS.
<Subwoofer section> (For TH-C90)
Amplifier section
SYSTEM
TX/RX
P_ON
CONN.
C-ch
SW-ch
IC103
C/SWch
SW_SIG
AMP.
C_OUT, SW_OUT1/2
C_PWMOUT
SW_PWMOUT1/2
IC203,Q2003,Q2004
PRE_VCC
SUBWOOFER
LIMITTER
Terminal section
C_PWMOUT
SW_PWMOUT1/2
L_PWMOUT
R_PWMOUT
IC301
SL_PWMOUT
to SR_PWMOUT
IC307
L_OUT, R_OUT
SL_OUT, SR_OUT
POWER SW_OUT2
AMP.
C_OUT, SW_OUT1
PROTECT
Q3801 to Q3803 FET_PROTECT
FET PROTECT
SW_SIG
IC251
SSS_ON
Q2501
Cch_OUT
Q2502
A/D_C, A/D_SW
POWER
AMP.
P.ON, PRE_VCC, TX/RX, PWM_CLK
A/D_L, A/D_R, A/D_SL, A/D_SR
P.ON, SSS_ON, TX/RX
Mother section
SIGNAL_LEVEL
A/D_C, A/D_SW
A/D_L, A/D_R, A/D_SL, A/D_SR
FAN ON
/FAN STOP Q531 to Q535
FAN CONTROL
SP RELAY
/PROTECT Q521 to Q525
PROTECTOR
P.ON
IC601
RESET
Q501 to Q505
MICOM
PROTECT
POWER CONTROL
& PROTECTOR
X601
8MHz
RY101
RELAY
AC IN
2-2
FL-ch
FR-ch
IC101
A/D IN L
L/Rch
A/D IN R
AMP.
SL-ch
L_OUT
A/D IN SL
SR-ch
R_OUT
A/D IN SR
IC102
SSS_AMP_IN_L
SSS_ON
SSS_AMP_IN_R
SI/SRch
IC202,X2001 L_PWMOUT
AMP.
PWM_CLK
R_PWMOUT
CLOCK
SL_OUT
OSCILLATOR
SR_OUT
LIMIT/PRTCT
SSS_AMP_IN_SL
SSS_AMP_IN_SR
Q2005
FET_PROTECT
SL_PWMOUT
Q2007,Q2008
SR_PWMOUT
FET PROTECT
CN112 CN111
CN312 CN311
SW_OUT2
SSS_AMP_IN_L
RY301
to SSS_AMP_IN_R
RY303
SSS_AMP_IN_SL
SSS_AMP_IN_SR
SP_RELAY+/-
DC_DETECT
SIGNAL_LEVEL
CN301 CN302 CN304
CN501 CN502 CN503
LED
FAN+
FAN-
+/-7.5V
FET_PROTEC
DC_DETECT Q151, Q152
SP_RELAY+/-
+/-7.5V REG.
+5V
PPOTECT
Q153
+5V REG.
+/-B DIODE
PRE_VCC
+12V BRIDGE
PWM_CLK
-B+12V
IC701
Q706, Q708
to IC705
V_COUNT1/2
+12V REG.
VOLTAGE
-B+12V REG.
CONTROL
CN151
W151
T101
S101
POWER
VOLTAGE SELECTOR
TRANS.
TO SW
SPEAKER
J3001
LchOUT
RchOUT
SLchOUT
SRchOUT
CchOUT
FAN+
FAN
FAN-
MOTOR
LED
D561
LED
D151
D152
D153