Service manual

HCD-NEZ30
2525
HCD-NEZ30
• Waveforms
– CD Board – – MAIN Board – – PANEL Board –
ws
IC801 od (XO)
(CD play mode)
1 V/DIV, 100 ns/DIV
238 ns
3.6 Vp-p
wa
IC801 qf (X1A)
1 V/DIV, 10
µ
s/DIV
30.6 µs
3.1Vp-p
3
IC201 u; (RFACO)
(CD PLAY mode)
200 mV/DIV, 500 ns/DIV
0.5 to 1.3 Vp-p
22.8 µs
3.3 Vp-p
1
IC201 1 (LRCK)
(CD PLAY mode)
1 V/DIV, 10
µ
s/DIV
2
IC201 5 (BCK)
(CD PLAY mode)
1 V/DIV, 200 ns/DIV
472 ns
3.3 Vp-p
4
IC201 <z/, (XTAO)
(CD PLAY mode)
1 V/DIV, 20 ns/DIV
59.4 ns
2.3 Vp-p
qa
T301 4 (REC mode)
50 V/DIV, 5
µ
s/DIV
12 µs
81.6 Vp-p
qs
Q344 (Collector) (REC mode)
5 V/DIV, 5
µ
s/DIV
12 µs
16.2 Vp-p
IC402 BA5947FM-E2
1
LEVEL SHIFT
MUTING
D
15
16
+
–
+
–
DD
17
18
D
19
20
VREF
21
22
23
24
25
26
27
28
PREVCC
OPOUT
OUTVREF
CH4CAPA
CH4IN
CH3FIN
CH3RIN
GND
MUTE
POWVCC
CH3OUTF
CH3OUTR
CH4OUTF
CH4OUTR
OPIN–
2
OPIN+
INTERFACE
14
13
D
12
11
D
10
9
8
7
6
CH2FIN
CH2RIN
GND
5
4
CH1FIN
CH1RIN
VREFIN
POWVCC
CH2OUTR
CH2OUTF
CH1OUTR
CH1OUTF
INTERFACE
D D
3
SW
INTERFACE
• IC Block Diagrams
– CD Board –
IC302 BD3881FV
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
– MAIN Board –