XM-S400D
XM-S400D
8
8
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
• Waveforms
– MAIN Board –
For Schematic Diagrams.
Note:
• All capacitors are in
μ
F unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
• All resistors are in
Ω
and 1/4 W or less unless otherwise
speci
fi
ed.
•
C
: Panel designation.
•
A
: B+ Line.
• Power voltages is dc 14.4V and fed with regulated dc
power supply from AMP REM and BATT cords.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : POWER ON
• Voltages are taken with VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
:
AUDIO
For Printed Wiring Boards.
Note:
•
X
: Parts extracted from the component side.
•
Y
: Parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• MAIN board is multi-layer printed board. However, the
patterns of intermediate layers have not been included in
diagrams.
• IC Block Diagrams
– MAIN Board –
IC301 TAS5414CTPHDRQ1
SIGNAL
PATH
LOAD
DIAGNOSTICS
AND
FAULT
MONITORS
CPC_BOT
40
CP
41
CPC_TOP
42
OUT1_M
48
6
GND 7
GND 8
GND 9
GND 12
GND 14
GND 16
IN1_P 13
FAULT 1
2
4
D_BYP 5
GND 3
GND
17
IN_M
18
IN3_P
19
IN4_P
20
GND
21
GND
22
GND
23
GND
24
GND
25 26
OUT4_M
34
OUT4_P
33
GND
35
GND
30
GND
31
GND
32
GND
27
PVDD
OUT1_P
47
SCL
20
64
GND
60
GND
59
GND
58
GND
57
GND
56
GND
55
PVDD
20
52
PVDD
53
PVDD
54
GND
20
51
GND
20
50
GND
20
49
FAULT
AND
TIMING
LOGIC
SUPPLIES
AND
REFERENCES
SDA
20
63
OSC_SYNC
20
61
I2C_ADDR
20
62
MUTE
STANDBY
10
REXT
11
IN2_P 15
A_BYP
CLIP_OTW
I2C
OSC
AND
CLOCK
OVER/UNDER
VOLTAGE
CHANNEL
UTILITIES
LOAD
DUMP
OVER TEMPERATURE
WARNING/SHUTDOWN
VREF AND IREF
CP
AVDD
OUT3_M
37
OUT3_P
36
GND
38
GND
39
GND
46
GND
43
OUT2_M
45
OUT2_P
44
PVDD
AVDD (6.5V)
28
PVDD
29
PVDD
DVDD (3.3V)
CHARGE
PUMP
IC502 S-1142D33I-E6T1U
IC503 TL594CDTB-R2
VOUT 1
ON/OFF 3
VIN
6
NC
4
VSS
5
VSS 2
+
–
OVERCURRENT
PROTECTOR
THERMAL
SHUTDOWN
REFERENCE
VOLTAGE
ON/OFF
CONTROL
+
–
DTC
1IN+
ERROR
AMPLIFIER 1
PWM
COMPALATOR
UNDER
VOLTAGE
LOCKOUT
CONTROL
C1
1D
CTC
COMPALATOR
FEEDBACK
2IN+
2IN–
1
3
4
0.7mA
15
16
OSCILLATOR
PULSE-STEERING
FLIP-FLOP
REF
14
1IN– 2
CT
RT
OUTPUT CTRL
5
6
13
VCC
12
GND 7
+
–
ERROR
AMPLIFIER 2
C1 8
E1
9
E2
10
C2
11
REFERENCE
REGURATOR
3
Q513, 514 (Drain)
10 V/DIV, 10
P
s/DIV
19
P
s
34.8 Vp-p
2
IC503
9
(E1),
q;
(E2)
5 V/DIV, 20
P
s/DIV
38.4
P
s
14 Vp-p
1
IC503
5
(CT)
1 V/DIV, 10
P
s/DIV
19.2
P
s
3 Vp-p
Note 1:
Only part of electrical parts that mounted on the
board of this unit can be replaced for repair.
Refer to “6. ELECTRICAL PARTS LIST” about
electrical parts for service.
Since electrical parts that are not described in the
electrical parts list cannot be replaced for repair, re-
place the complete mounted board when these elec-
trical parts are defective.
Note 2:
When the complete MAIN board is replaced, be sure
to apply the grease (OIL COMPOUND (KS609)) so
as to cover the IC301 on the MAIN board.
Note 1:
Only part of electrical parts that mounted on the
board of this unit can be replaced for repair.
Refer to “6. ELECTRICAL PARTS LIST” about
electrical parts for service.
Since electrical parts that are not described in the
electrical parts list cannot be replaced for repair, re-
place the complete mounted board when these elec-
trical parts are defective.
Note 2:
When the complete MAIN board is replaced, be sure
to apply the grease (OIL COMPOUND (KS609)) so
as to cover the IC301 on the MAIN board.
