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D-E666/EJ620/EJ621/EJ622/EJ623/EJ625/EJ626CK
Waveforms
r
4
1
PLAY MODE
2.1 Vp-p
1.9 µsec
IC601 wg
IC601 ua
VOLT/DIV : 0.5 V AC
CLOCK
TIME/DIV : 0.5 µsec
RFAC
2
5
1.3 Vp-p
239 nsec
22.9 µsec
IC601 e;
IC601 ih
VOLT/DIV : 0.5 V AC
TIME/DIV : 0.1 µsec
R4M
LRCK
3
6
2.1 Vp-p
3.8 µsec
479 nsec
IC601 o;
IC601 rd
VOLT/DIV :0.5 V AC
TIME/DIV : 2 µsec
MDP
BCK
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1
/
W or less unless otherwise
4
specified.
Note:
Note:
The components identi-
Les composants identifiés
fied by mark 0 or dotted par une marque 0 sont cri-
line with mark 0 are cri- tiques pour la sécurité.
tical for safety.
Ne les remplacer que par
Replace only with part
une piéce portant le
number specified.
numéro spécifié.
A : B+ Line.
•
• Power voltage is dc 4.5V and fed with regulated dc power
supply from external power voltage jack (J401).
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : PLAY
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD
7
0.9 Vp-p
400 – 650
mVp-p
16.9MHz
IC601 of
VOLT/DIV : 0.2 V AC
VOLT/DIV : 0.1 V AC
XTAO
TIME/DIV : 20 nsec
TIME/DIV : 0.5 msec
8
2.6 Vp-p
2 Vp-p
4MHz
IC801 ul
VOLT/DIV : 0.5 V AC
VOLT/DIV : 0.5 V AC
TIME/DIV : 5 µsec
TIME/DIV : 0.1 µsec
XIN
2.1 Vp-p
VOLT/DIV : 0.5 V AC
TIME/DIV : 0.1 µsec
• Abbreviation
CND : Canadian
AUS : Australian
FR
: French
HK
: Hong Kong
AR
: Argentina
JEW : Tourist
G
: German
CH
: Chinese
EE
: East European
C&SA : Central and South America
E13
: AC220-230V area model
E33
: AC100-240V area mdoel
z
IC Block Diagrams
IC302 AN17880A-EAL
BIAS
PWR
MUTE
IN
BIAS
SW
MUTE
TC
15
14
13
12
16
STANDBY
MUTE
BIAS
SW
SW
C-AMP
SW
1
2
3
4
5
RF IN OCL
VCC
VREF
ROUT
SW
IC401 TB2119F
60
59 58 57 56
VLGO1
61
R-2
LIL
62
PGND1
63
L1H
64
SAWTOOTH
VIN
65
L2H
66
SAWTOOTH
PGND2
67
L2L
68
R-4
69
VLGO2
VREF
70
PGND3
SAWTOOTH
L3
71
R-3
72
VLG3
CNP3
73
VREF
INM3
74
RF3
75
DTC3
76
RF21
77
R-4
PAPC
78
VCPU
APCREF
79
VIHDET
80
VREF
1
2
3
4
16
16
IC500 BA6779BFV-E2
BEEP
GND
RIN
11
10
9
RFI
1
BEEP
VC
2
IN2+
3
V-I
–
+
IN2-
4
V-I
5
IN3+
V-I
–
+
6
7
8
IN3-
6
V-I
LOUT
PGND
LIN
RF BIAS
7
OFFADJ
ADJUST
GND
8
55
54 53 52 51
50
49 48
47
46
45
VREF
VREF
R-1
SUB VREF
VCC1
VCPU DCIN
VIN
VREF
R-6
OEB
VREF
CONTROLLER
VREF
VCPU
S-2
SAWTOOTH
SAW GEN
STANDBY
REFERENCE
S-3
VCPU
CLK
OR OSC
1/2 VREF
BIAS
BANDGAP
REFERENCE
(VREF)
S-1
R-5
CLK
INTERFACE
VG
5
6
7
8
9 10 11
12 13 14 15
16
AVDD
15
RFO
14
IV2-
+
–
+
13
IV2+
12
IV3-
+
–
+
IV3+
11
STB CTL
GAIN CTL
10
GCNT
9
XSTBY
44
43
42 41
40
F01
H BRIDGE
39 NGND1
DRIVER 1
CONTROL
CHARGE
38 R01
CHGON/OFF
37 VD12
36 F02
H BRIDGE
35 MGND2
DRIVER 2
LEVEL
SHIFTER
34 R02
D-1 to 4
33 VD23
32 F03
H BRIDGE
31 MGND3
DRIVER 3
30 R03
29 VD34
28 F04
H BRIDGE
27 MGND4
DRIVER 4
26 R04
D-5
25 HPOUT1
LEVEL
24 HGND
SHIFTER
PWM
H/P
23 HPOUT3
DRIVER
MUTE
22 VHP
CONTROLLER
21 HPOUT2
16 17 18 19 20
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