Pioneer GX470 User manual

ORDER NO.
CRT2916
GX470
AUDIO SYSTEM
HEAD UNIT
CRT2916
PUB.NO.
Manufactured for TOYOTA
by PIONEER CORPORATION
VEHICLE DESTINATION PRODUCED
AFTER TOYOTA PARTS No. ID No. PIONEER MODEL No.
LEXUS GX470 U.S.A., CANADA November 2002 86120-60440 P1731 KEX-M8727ZT/UC
KEX-M8727ZT-91/UC
LEXUS GX470 U.S.A., CANADA November 2002 86120-60470 P1732 KEX-M8527ZT/UC
KEX-M8527ZT-91/UC

KEX-M8727ZT/UC
10
1234
1234
C
D
F
A
B
E
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
CN501
ANT
IC561
HA12181FP
16 3
9
S-80735ANDZI
IC602
2
1
RESET
VDD
Q811 Q813
Q816
ILLB
FML
CN804
5,613,14
13 15
12
RESET
XIN
4
XOUT
SYSTEM CONTROLLER
IC601
KDT,kst
AMAIN UNIT
FM/AM TUNER UNIT
KEYBOARD UNIT
B
51
LOCL
53
PCE2
33
pck
52
PCE1
93
SL
56
FMSD
57
st
31,32
PDO,PDI
IC 3
EEPROM
28
27
FM/AM 1ST IF 10.7MHz
T51 Q51 CF51 CF52 CF53
IC1
MIXER, IF AMP, DET.
6
21
COMP
22
25 10 14 12 15 16 8 13 2 4
CF202
VDD
VCC
DI/DO CE2 CK CE1 SDBW SL FMSD NL2
IC 2 FM MPX
AMANT
FMANT
ATT
ATT
AMRF
FMRF
IMG ADJ
RF ADJ
X901
10.25MHz
ANT ADJ
LOCL
AMDET
MPXREF 41kHz
AM 2ND IF
450kHz
1
STIND
L ch
9
AMDET
17
AMPNS
26 RFGND
CN901
KEY MATRIX
ILLUMINATION
BU
2
Q502
AUD+B
SW5V
Q
Q405
Q
44
AMPW
Q252
55
NL2
Q406
IC401
NJM2068
M
RBDS
DECODER
TUNER MIXING
AM PNS
FML
AML
Q561
AMB
AMB
IC501
LA1061M 1
13
5
6
Q501
NIN
MFIX
SUB
MAIN
SUB
MAIN
PD5840A
CN251
CN252
CN253
CN255
CN256
CN254
IC251
HA12216F
TAPE EQUALIZER
MECHANISM DRIVER
IC351
PA2020A
Q271
BU
M
SUB
MOTOR
M
MAIN
MOTOR
7
+B
TAPE-L
MTL
MTL
VR302
VREF
6
16
11
12
28
37
39
17
5
2
NR
1
STBY
LOAD
LOAD
SWITCH
MODE
SENSE
1
4
5
2
1
4
3
20
64
1
64
1
CDECK UNIT
DSENSOR UNIT
SWITCH
70µs
19
CREQ
BU
CN353
4
3
20
AUD+B
CSL
MS,DIR,PLAY,MTL,
NR,CSLOAD,POS,ES,
SC2,SC1,CM,STBY
3
NL1
91
NL1
18
LDET
IC252
PM4009A
820
19
ldet
RCK,RDT,rdslk,57K,drst
FWD
LcH
REV
LcH

KEX-M8727ZT/UC 11
5678
5678
C
D
F
A
B
E
Q811 Q813
Q816
ILLB
NJM2068MD
IC204
NJM2068MD
IC203
L+
LANL+
L-
ANT
TX+
TX+
TX-
TX-
RSL-
RSL+
TX1-
TX1+
LANL
2
5
5
75
8
C
N804
5,6
Q808
Q802
ILL
ACC
HA12187FP
IC701
S-81256SGUP-DIM
IC870
4
LAMP
1
SYSPWR
S
YSTEM CONTROLLER
AVC-LAN
IC601
73
2
SWVDD
AUD+B
AUD+B
AUD+B
ASENS
BSENS
KDT,kst
6
SYSMUTE1
5
SYSMUTE2
RX
TX
IPPW 22
30
29
86
1
2
CN801
CN473
BU
ISENS
+B
+B
6
FMSD
57
st
43
FMPW
TC4052BF
IC202
2TC4052BF
IC302
NJM2068MD
IC201
BU
7
NJM2068MD
IC304
Q205Q204
NJM2068MD
IC303
16 8 8
16 8
2
8
CN472
Q305Q304
Q867Q865
Q866Q864
Q860
Q861
Q862
Q863
BU
BU
3
Q563
Q405
Q564
44
AMPW
Q
252
55
NL2
Q406
IC401
NJM2068MD
ACC
Q807
Q870
Q645
Q644
ASEN
ACC
Q805
ISEN ILL
11
SWVDD
100
ANTB
5
32
75
Q806
BSEN
BU
BU
BU
VDD
VDD
AMP
AUD+B
SW5V
Q453
Q451
Q452
Q882
BU
Q884
AUDIO SELECT
FOR AMP
AUDIO SELECT
FOR RSA
TUNER MIXING AMP UNBALANCE TO BALANCE
UNBALANCE TO BALANCE
BALANCE TO
UNBALANCE
SYSTEM MUTE
SYSTEM MUTE
5R6V IC
16763
7676
FML
AML
6
LANL-
LANL+
LANL-
CSL
TUL
LANL
TUL
CSL
FMB
AMB
FMB
AMB
SWVDD
PD5840A
1
1
91
NL1
IC252
PM4009A
20
RCK,RDT,rdslk,57K,drst

KEX-M8727ZT/UC
12
1234
1234
C
D
F
A
B
E
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)
A-a A-b
A-a A-b
A-b
A-a
Large size
SCH diagram
Guide page
Detailed page
Note: When ordering service parts, be sure to refer to " EXPLODED VIEWS AND PARTS LIST" or
"ELECTRICAL PARTS LIST". A-a
A
BCN901
CCN251
RBDS DECODER
TUNER
FM:-24.0dBs(30%,400Hz)
AM:-11.7dBs(30%,400Hz)
TAPE:-7.5dBs(0dB,1kHz)
SYSTEM CONTROLLER
8V
5V
FM DIVERSITY
KE
X
KE
X

KEX-M8727ZT/UC 13
5678
5678
C
D
F
A
B
E
A-b
A-a A-b
A-a A-b
A-b
A-a
A
AMAIN UNIT
Decimal points for resistor
and capacitor fixed values
are expressed as :
2.2 2R2
0.022 R022
←
←
The >mark found on some component parts indicates
the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of
identical designation.
Symbol indicates a resistor.
No differentiation is made between chip resistors and
discrete resistors.
NOTE :
Symbol indicates a capacitor.
No differentiation is made between chip capacitors and
discrete capacitors.
FM:-14.4dBs
AM:-14.8dBs
(KEX-M8727ZT)
AM:-11.5dBs
(KEX-M8527ZT)
TAPE: -7.5dBs
L-
L+
(AMP)
SYSTEM MUTE
R+
R-
L-
L+
(RSA)
UNBALANCE TO BALANCE
SYSTEM MUTE
UNBALANCE TO BALANCE
AUDIO
SELECTOR
FOR RSA/RSE
FM:-14.4dBs
AM:-14.8dBs
(KEX-M8727ZT)
AM:-11.5dBs
(KEX-M8527ZT)
TAPE: -7.5dBs
VDD 5V
AUDIO SELECTOR
FOR AMP
BALANCE TO UNBALANCE
TUNER MIXING AMP
HARD MUTE
FM:-4.6dBs
AM:-5.0dBs
(KEX-M8727ZT)
AM:-1.7dBs
(KEX-M8527ZT)
TAPE: +2.3dBs
>
13.2V 13.2V
ILL
SENSE B.UP
SENSE ACC
SENSE
13.2V
13.2V
5V
8.3V
5V
R417,418
KEX-M8727ZT 91K
KEX-M8527ZT 62K

KEX-M8727ZT/UC
14
1234
1234
C
D
F
A
B
E
A-a A-b A-a
A-a
A-b 12
RBDS DECODER
TUNER MIXING AMP
FM:-24.0dBs(30%,400Hz)
AM:-11.7dBs(30%,400Hz)
5V
FM DIVERSITY
KEX-M8727ZT KEX-M8527ZT

KEX-M8727ZT/UC 15
5678
5678
C
D
F
A
B
E
A-a A-b A-a
A-a
A-b
34567
B
CN901
C
CN251
TAPE:-7.5dBs(0dB,1kHz)
SYSTEM CONTROLLER
8V
5V

KEX-M8727ZT/UC
16
1234
1234
C
D
F
A
B
E
A-a A-b
A-b 12
AMAIN UNIT
FM:-14.4dBs
AM:-14.8dBs
(KEX-M8727ZT)
AM:-11.5dBs
(KEX-M8527ZT)
TAPE: -7.5dBs
L-
L+
(AMP)
SYSTEM MUTE
R+
R-
L-
L+
(RSA)
UNBALANCE TO BALANCE
SYSTEM MUTE
UNBALANCE TO BALANCE
AUDIO SELECTOR FOR RSA/RSE
FM:-14.4dBs
AM:-14.8dBs
(KEX-M8727ZT)
AM:-11.5dBs
(KEX-M8527ZT)
TAPE: -7.5dBs
VDD 5V
AUDIO SELECTOR FOR AMP
BALANCE TO UNBALANCE
N
G AMP
HARD MUTE
5
V
R417,418 KEX-M8727ZT 91K KEX-M8527ZT 62K

KEX-M8727ZT/UC 17
5678
5678
C
D
F
A
B
E
A-a A-b
A-b
34567
Decimal points for resistor and capacitor fixed values are expressed as : 2.2 2R2 0.022 R022
←
←
The >mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation.
Symbol indicates a resistor. No differentiation is made between chip resistors and discrete resistors.
NOTE :
Symbol indicates a capacitor. No differentiation is made between chip capacitors and discrete capacitors.
HARD MUTE
FM:-4.6dBs
AM:-5.0dBs
(KEX-M8727ZT)
AM:-1.7dBs
(KEX-M8527ZT)
TAPE: +2.3dBs
>
13.2V 13.2V
ILL
SENSE B.UP
SENSE ACC
SENSE
13.2V
13.2V
5V
8.3V
5
V

KEX-M8727ZT/UC
18
1234
1234
C
D
F
A
B
E
3.3 KEYBOARD UNIT
B
PWR•VOL
ACN804