Sony CMT-NEZ7DAB / HCD-NEZ7 Service Manual ▷ View online
31
HCD-NEZ7
IC301
TC94A34FG-002
33
34
35
36
37
38
39
40
41
42
1
8
43
57
62
58
61
56
63
52
50
47
46
45
44
48
49
25
26
27
28
29
30
31
32
17
18
19
20
21
22
23
24
9
10
11
2
3
4
5
6
7
64
55
53
51
12
13
14
15
16
54
SDO2/
/CS/
/RAS
/CS/
/RAS
PO12/
AD15/
/CAS
AD15/
/CAS
SDO3/
/OE
/OE
TXO
DIT
Bus
Switch
BUCK/
PO11/
AD14
PO11/
AD14
/CCE/
PO10/
AD13
PO10/
AD13
PO9/AD12
PO8/AD11
VDDM
General
Input/
Output
Port
Address Calc.
2sets
Y-
P
ointer
register
C-P
ointer
register
CDP
Control
I/F
Sub Code I/F
X-P
ointer
register
SRMSTB
VDDT
AD10
AD9
AD8
PO7AD7
PO6/AD6
PO5/AD5
YRAM
4k w
ord
CRAM
4k w
ord
ERAM
4k w
ord
x1
2k w
ord
x1
CR
OM
4k w
ord
x9
XRAM
4k w
ord
Timer
Flag
Interrupt
Control
SRAM/DRAM
I/F
SRAM I/F
1k bit
SRAM
X-Bus
Y
-Bus
VCO
Timing
Generator
PRAM
4k w
ord
PR
OM
4k w
ord
x5
40 bit
Instr
uction
Decoder
Prog
ram
Control
MCU I/F
register
XO/X1/X2
Y0/Y1/Y2
MX
MY
MZ
MA
C
A0
A1
AX
AY
ALU
A2
A3
round & limit
round & limit
A
udio I/F
SBSY/
BCKIB
D
ATA
/
SDI1
LRCKIA
BCKIA
SDI0
LRCKO
BCKO
SDO0
VDDT
VSS
/MIACK/
AD16
/MICK
MIDIO
/MILP
/MICS
STANDBY
/RESET
VDDP
PO4/
AD4
PO3/
AD3
PO2/
AD2
PO0/
AD0
VSS
PO1/
AD1
VDD
VSSP
VCOI
VDDX
TEST
60
VSSX
CK
O/
PO13/
AD16
MIMD
59
XI
XO
CKI/CLCK/
IRQ/FI0
VDD
VSS
PIO0/
SDI2/IO0
PIO1/
SDI3/IO1
PIO2/
IO2
PIO3/
IO3
B
US3/FI1/
PIO4/IO4
B
US2/FI2/
PIO5/IO5
B
US1/FI3/
PIO6/IO6
B
US0/
PIO7/IO7
SDO1//WE
SFSY/
LRCKIB
JT
A
G
I/F
32
HCD-NEZ7
– MAIN Board –
28
REC1O
27
REC1N
26
REC2N
25
REC2O
24
INC2
23
INC1
22
INB2
21
INB1
20
INA2
19
INA1
18
OUT1
17
BAS1
16
OUT2
15
BAS2
BASS
BASS
13
CONT
14
VEE
12
VDD
11
TRE2
10
TRE1
TREBLE
TREBLE
7
VOLIN1
8
VOLIN2
9
GND
VOLUME
VOLUME
6
PB1O
LOGIC
CONTROL
5
PB2O
4
PB2N
1
PB1N
2
PB1P
3
PB2P
IC302
BD3881FV
0Y
VDD
1
16
2Y
2X
2
15
Y-COM
1X
3
14
3Y
X-COM
4
13
1Y
0X
5
12
INH
3X
6
11
VEE
A
7
10
VSS
B
8
9
LOGIC LEVEL
CONVERTER
THERMAL
SHUT DOWN
OVER CURRENT
PROTECT
VDD
VCC
2
GND
3
NC
5
OUT
4
CTL
1
–
+
VREF
DRIVER
– SELECTOR Board –
IC721
TC4052BF (EL, N)
– POWER Board –
IC951
BA50BC0WFP-E2
IC952
BA33BC0WFP-E2
33
HCD-NEZ7
•
Waveforms
4
IC101
ra
(RFACO)
(CD play mode)
200 mV/DIV, 500 ns/DIV
Approx.
800 mVp-p
800 mVp-p
22.8
µ
s
4.4 Vp-p
1
IC101
yd
(LRCK)
(CD play mode)
1 V/DIV, 10
µ
s/DIV
2
IC101
yh
(BCK)
(CD play mode)
1 V/DIV, 200 ns/DIV
qa
T301
4
(REC mode)
50 V/DIV, 5
µ
s/DIV
12
µ
s
81.6 Vp-p
qs
Q344 (Collector)
(REC mode)
(REC mode)
5 V/DIV, 5
µ
s/DIV
12
µ
s
16.2 Vp-p
ws
IC801
qd
(XOUT)
200 mV/DIV, 50 ns/DIV
62.5 ns
0.6 Vp-p
472 ns
4.5 Vp-p
3
IC101
uj
(XTAO)
(CD play mode)
1 V/DIV, 20 ns/DIV
59 ns
4.5 Vp-p
wa
IC801
qa
(XCOUT)
1 V/DIV, 10
µ
s/DIV
30.6
µ
s
2.5Vp-p
– CD Board –
– MAIN Board –
– PANEL Board –
34
HCD-NEZ7
SECTION 8
EXPLODED VIEWS
•
Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
•
The mechanical parts with no reference
number in the exploded views are not supplied.
number in the exploded views are not supplied.
NOTE:
•
-XX and -X mean standardized parts, so they
may have some difference from the original
one.
may have some difference from the original
one.
•
Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color
Cabinet's Color
The components identified by mark
0 or dotted line with mark 0 are
critical for safety.
Replace only with part number
specified.
0 or dotted line with mark 0 are
critical for safety.
Replace only with part number
specified.
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
4-247-752-01 FOOT, RUBBER
2
4-951-620-01 SCREW (2.6X8), +BVTP
3
2-581-402-91 CABINET
4
4-671-016-01 SCREW (FAN)
5
2-650-395-01 SPACER (FAN)
6
2-650-108-01 NUT
8-1.
CABINET SECTION
7
2-636-958-01 SPACER
M301
1-787-103-11 FAN, DC
#1
7-685-646-79 SCREW +BVTP 3X8 TYPE2 N-S
#2
7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S
#4
7-685-871-01 SCREW +BVTT 3X6 (S)
1
1
2
2
3
4
6
7
cabinet (top) section
mechanical deck section,
PANEL board section
PANEL board section
chassis section
M301
not supplied
#1
#2
#2
#1
#4
5
not supplied
not supplied
not
supplied
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