Denon DCD-485, Service Manual

Page: 14 / 45

14
1 REV
5CH output change terminal, logic input of
loading block
2 S-Vcc
signal system power supply
(BTL-AMP:CH1~4)
3 Vcc2 Power supply for loading block
4 VL0
−
Loading output (
−
)
5 VL0+ Loading output (+)
6 VO4+ Output terminal (+) for channel 4
7 VO4
−
Output terminal (
−
) for channel 4
8 VO3+ Output terminal (+) for channel 3
9 VO3
−
Output terminal (
−
) for channel 3
10 VO2+ Output terminal (+) for channel 2
11 VO2
−
Output terminal (
−
) for channel 2
12 VO1+ Output terminal (+) for channel 1
13 VO1
−
Output terminal (
−
) for channel 1
14 Vcc1 CH1•`CH4(BTL-AMP) output stage power supply
15 VIN1 Input terminal for channel 1
16 VIN1
−
OP-AMP input AMP-A input terminal (
−
)
17 VIN1+ OP-AMP input AMP-A input terminal (+)
18 VIN2 Input terminal for channel 2, input AMP output
19 VIN2
−
Input terminal (
−
) for channel 2
20 VIN2+ Input terminal (+) for channel 2
21 Vcc-VREG 3.3VREG power supply
22 GND-VREG 3.3VREG GND
23 VIN3 Input terminal for channel 3, input AMP output
24 VIN3
−
Input terminal (
−
) for channel 3
25 VIN3+ Input terminal (+) for channel 3
26 REG-IN PNP transistor base connected
27 REG-OUT
3.3V power output to which the PNP transistor
collector connected
28 VCONT Loading output voltage set terminal
29 VREF-IN Reference voltage applied terminal
30 VIN4+ Input terminal (+) for channel 4
31 VIN4- Input terminal (
−
) for channel 4
32 VIN4 Input terminal for channel 4, input AMP output
33 MUTE1 Output ON/OFF for channel 1 (BTL AMP)
34 MUTE2 Output ON/OFF for channel 2 to 4 (BTL AMP)
35 S-GND Signal system GND
36 FWD
Output change terminal (FWD) for loading
output (VLO+
−
), logic input of loading block
Pin
No.
Name Function
LA9241M (IC103)
1
2
3
4
5
6
7
8
9
FR
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
FR
27
26
25
24
23
22
21
20
19
FWD
S-GND
MUTE2
MUTE1
VIN4
VIN4-
VIN4+
VREF-IN
VCONT(LOADING)
FR
REG-OUT
REG-IN
VIN3+
VIN3-
VIN3
GND-VREG
VCC-VREG
VIN2+
VIN2-
REV
S-VCC
VCC2
VLO-
VLO+
VO4+
VO4-
VO3+
VO3-
FR
VO2+
VO2-
VO1+
VO1-
VCC1
VIN1
VIN1-
VIN1+
VIN2
Signal System VCC
(CH1 to CH4)
33k
11k
33k
11k
3.3VREG GND
3.3VREG
33k
11k
3.3VREG
PNP Tr
Base
PNP Tr
Collector
33k
11k
CH1 Output
ON/OFF
CH2 to CH4
Output
MUTE1
MUTE2
(LOADING)
Power Supply
Input
(Forward/Reverse/
Break/OFF)
O
u
tput
Control
Level
Shi
ft
Level
Shi
ft
Power
System
GND
Level
Shi
ft
Level
Shi
ft
Power Supply
Power Supply
(External PNP)
Power System GND
Signal System GND
Thermal
Shutdown
NC
TBC
FSC
DGND
SLI
SLC
RFS
RFSM
CV
CV
SLOF
HFL
TES
TOFF
TGL
JP
FD
FA
FA
FE
FE
AG
ND NC
SP
SP
G
SP
SP
D
SL
E
Q
SL
D
SL SL JP
FIN2
FIN1
E
F
TB
TE
TE
SCI
TH
TA
TD
TD
JP
TESI
TO
FD
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
VCC1 LDS LDD BH1 PH1 LF2 VR REFI VCC2 FSS DRF CE DA
T
CL CL
K
DE
F
-
-
+ - - -
- -
-
+
-
+
-
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
APC
RF DET
REF
I/V
VCA
VCA BAL
-com
INTER FACE
T. SERVO & T.LOGIC
F.SERVO & F.LOGIC SPINDLE
SERVO
SLED SERVO
TE
SLC
RF Amp
FIN2
FIN1
E
F
TB
TE
TE
SCI
TH
TA
TD
TD
JP
TESI
TO
FD
-
-
FD
FA
FA
FE
FE
A
GN
D
NC
SP
SPG
SP
SPD
SLEQ
SLD
SL SL JP
+ -
-
-
- -
-
NC
TBC
FSC
DGND
SLI
SLC
RFS
RFSM
CV
CV
SLOF
HFL
TES
TOFF
TGL
JP+
-
+
-
VCC
1
LDS LDD BH1 PH1 LF2 VR REF
I
VCC
2
FSS DR
F
CE DAT CL CLK DEF
LA6559 (IC101)
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