Block Diagram -Display Section; Circuit Boards Location - Sony CDX-4000RV Service Manual

3-4. BLOCK DIAGRAM — DISPLAY SECTION —
SYSTEM CONTROL
KEY MATRIX
46 KEY IN0
LSW901-917
S901-904
47 KEY IN1
LSW801
KEY
ACTIVE 76 KEY ACK
Q651
35 AD ON
KEY
KEY ACT
ACTIVE
Q652
RC IN1
85
J501
48 RC IN0
(REMOTE IN)
ROTARY
36 RE IN0
ENCODER
37 RE IN1
RE901
SW504 NOSE SW
67
(NOSE DET)
73 XOA
X502
32.768kHz
74 XIA
04
LCD DRIVE
IC501 (3/3) IC901
LCD SO 13 64 DATA
LCD901
LCD CKO 14 63 CL
LCD CE 15 62 CE
DIMMER
3
LED DRIVE
Q903
DOOR IND
DOOR IND 29 DRIVE
Q551
LED801-803 LED910-915 LSW901-907,909-917
LED901-904
POWER
ILL ON 7 CONT
Q633
+10V REG
BATT ILL +B
Q631
XO 92
X501
3.68MHz
XI 93

3-5. CIRCUIT BOARDS LOCATION

DISC IN SW board
SUB (CD) board
LOAD SW board
KEY board
23 23
CDX-4000RV
SUB board
LIMIT SW board
tuner unit
(TU1)
MAIN board
SERVO board