Sony MDX-62 Service Manual ▷ View online
– 11 –
3-7. SERVO BOARD
1
CN200
3
CN100
5
CN300
4
CN400
2
screws
(M1.7x2.2)
7
SERVO board
6
Unsolder the
motor lead wires.
3-8. OPTICAL PICK-UP
1
screws
(K1.7x3.5)
2
optical pick-up
– 12 –
3-9. NOTE ON ASSEMBLY FOR THE CHASSIS (OP) BLOCK
Note : Follow the disassembly procedure in the numerical order given.
A
B
B
B
A
A
1
Turn the three feed
screw (ELV) assy fully in
the direction of arrows
the direction of arrows
A
.
8
Turn the three gear (ELVB) fully
in the direction of arrows
B
.
4
bearing (ELV)
7
precision screws
(P1.7x1.8)
6
precision screw
(P1.7x1.8)
5
chassis (bottom) assy
3
chassis (OP) block
2
bearing (ELV)
!¡
gear (ELVC)
9
gear (ELVA2)
!™
polyethylene washer
0
polyethylene washer
– 13 –
4-1. IC PIN DESCRIPTIONS
• IC100 CXA2523AR (RF AMP)
Pin No.
Pin Name
I/O
Pin Description
1
I
I
I-V converted RF signal input (I) from detector of optical pick-up.
2
J
I
I-V converted RF signal input (J) from detector of optical pick-up.
3
VC
O
Center voltage (+1.65 V) generation output
4 – 9
A – F
I
Signal input (A to F) from detector of optical pick-up.
10
PD
I
Quantity monitor input of light from laser diode of optical pick-up.
11
APC
O
Laser amplifier output to automatic power control circuit.
12
APCREF
I
Reference voltage input for laser power setting.
13
GND
—
GND
14
TEMPI
I
Temperature sensor connecting pin (Not used in this set.)
15
TEMPR
O
Reference voltage output for temperature sensor. (Not used in this set.)
16
SWDT
I
Write data signal input from System controller (IC600).
17
SCLK
I
Serial clock signal input from System controller (IC600).
18
XLAT
I
Serial latch signal input from System controller (IC600).
19
XSTBY
I
Standby signal input (“L” : Standby) (Fixed at “H” in this set.)
20
FOCNT
I
Center frequency control voltage input of internal circuit filter (BPF22, BPF3T and EQ).
21
VREF
O
Reference voltage output (Not used in this set.)
22
EQADJ
I
Center frequency setting input of internal circuit filter (EQ).
23
3TADJ
I
Center frequency setting input of internal circuit filter (BPF3T).
24
VCC
—
Power supply pin (+3.3 V)
25
WBLADJ
I
Center frequency setting input of internal circuit filter (BPF22).
26
TE
O
Tracking error signal output to CXD2652AR (IC200).
27
CSLED
I
Connecting pin for low pass filter condenser of sled error signal.
28
SE
O
Sled error signal output to CXD2652AR (IC200).
29
ADFM
O
FM signal output of ADIP.
30
ADIN
I
FM signal input of ADIP by AC combination.
31
ADAGC
I
External condenser connecting pin for AGC of ADIP.
32
ADFG
O
ADIP double FM signal output (22.05 kHz
±
1 kHz) to CXD2652AR (IC200).
33
AUX
O
Support signal (I3 signal/temperature signal) output (Not used in this set.)
34
FE
O
Focus error signal output to CXD2652AR (IC200).
35
ABCD
O
Quantity signal output of light to CXD2652AR (IC200).
36
BOTM
O
Bottom hold signal output of quantity signal (RF/ABCD) of light to CXD2652AR (IC200).
37
PEAK
O
Peak hold signal output of quantity signal (RF/ABCD) of light to CXD2652AR (IC200).
38
RF
O
Playback EFM RF signal output to CXD2652AR (IC200).
39
RFAGC
I
External condenser connecting pin of AGC circuit for RF.
40
AGCI
I
RF signal input by AC combination.
41
COMPO
O
User comparator output pin (Not used in this set.)
42
COMPP
I
User comparator input pin (Fixed at “L” in this set.)
43
ADDC
I
External condenser connecting pin for low frequency interception of ADIP amplifier.
44
OPO
O
External condenser connect pin for lower cut of ADIP amplifier.
45
OPN
I
User operational amplifier inversion input pin (Fixed at “L” in this set.)
46
RFO
O
RF signal output
47
MORFI
I
RF signal input of MO by AC combination.
48
MORFO
O
RF signal output of MO.
SECTION 4
DIAGRAMS
– 14 –
• IC600
µ
PD784216GC-027-8EU (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Pin Description
1
M1
O
Elevator motor (M904) drive signal output
2
M1
O
Elevator motor (M904) drive signal output
3
M2
O
Loading motor (M903) drive signal output
4
M2
O
Loading motor (M903) drive signal output
5
MDMON
O
Mechanism deck system power control output (“H” : Power ON)
6
LES
I
Loading end sensor detection switch (S902) input
7
SES
I
Store end sensor detection switch (S903) input
8
HOME
I
Home position detection switch (S901) input (“L” : Home position)
9
VDD
—
Power supply pin (+5 V)
10
X2
—
Main system clock connecting pin (14 MHz)
11
X1
—
Main system clock connecting pin (14 MHz)
12
VSS
—
GND
13
XT2
—
Sub system clock connecting pin (32.768 kHz)
14
XT1
—
Sub system clock connecting pin (32.768 kHz)
15
RESET
—
System reset input
16
BU IN
I
Backup OFF detection input (“L” : Backup OFF)
17
BUS ON
I
BUS OFF detection of SONY BUS. (“H” : BUS OFF)
18
SQ SY
I
Sub code Q sync input from CXD2652AR (IC200).
19
STR SW
I
STOP switch (S600) input
20
—
O
Not used.
21
CC XINT
I
Interruption status input from CXD2652AR (IC200).
22
—
O
Not used.
23
AVDD
—
Power supply for A/D converter. (+5 V)
24
AVREF0
—
Reference voltage for A/D converter.
25
INIT
I
Initial input pin at reset.
26
TEMP
I
Thermistor connecting pin for temperature detection.
27
EHS
I
Elevator height position detection input
28, 29
—
I
Connect to GND.
30 – 32
—
O
Connect to GND.
33
AVSS
—
Analog GND
34
ERR PWM
O
Error data output (Not used in this set.)
35
—
O
Not used.
36
AVREF1
—
Reference voltage for D/A converter.
37, 38
—
O
Not used.
39
—
—
Not used.
40
MD SI
I
Read data signal input from CXD2652AR (IC200).
41
MD SO
O
Write data signal output to CXA2523AR (IC100) and CXD2652AR (IC200).
42
MD CKO
O
Serial clock signal output to CXA2523AR (IC100) and CXD2652AR (IC200).
43
—
O
Not used.
44
—
—
Not used.
45
UNISI
I
Serial data input for SONY BUS.
46
UNISO
O
Serial data output for SONY BUS.
47
UNI CKI
I
Serial clock input for SONY BUS.
48
LINKOFF
O
Link control signal output for SONY BUS. (“H” : Link OFF)
49
—
O
Not used.
50
—
I
Not used.
51, 52
D-BASS1, 2
O
Digital D-BASS select output 1, 2
53 – 55
—
O
Not used.
56 – 59
MNT0 – 3
O
Monitor 0 – 3 signal input from CXD2652AR (IC200).
60
AGING
O
Not used.
61
AGCHK
O
Not used.
62
TFTON
O
Not used.
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