Denon DCD-485 Service Manual page 14

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3 7 63 1515 0
LA6559 (IC101)
REV 1
Signal System VCC
S-VCC 2
Input
Power Supply
(Forward/Reverse/
(LOADING)
VCC2 3
Break/OFF)
VLO- 4
VLO+ 5
VO4+ 6
VO4- 7
VO3+ 8
VO3- 9
Power
System
GND
FR FR
VO2+ 10
VO2- 11
VO1+ 12
VO1- 13
VCC1 14
Power Supply
(CH1 to CH4)
VIN1 15
VIN1- 16 33k
11k
VIN1+ 17
VIN2 18
TE
L 13942296513
LA9241M (IC103)
FIN2 1
FIN1 2
E 3
F 4
TB 5
-
TE 6
TE 7
TESI
8
SCI 9
TH
10
TA 11
-
TD 12
TD
13
JP 14
TO 15
FD 16
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Thermal
Shutdown
36 FWD
Signal System GND
35 S-GND
CH2 to CH4
MUTE2 34 MUTE2
Output
CH1 Output
33 MUTE1
MUTE1
ON/OFF
32 VIN4
33k
31 VIN4-
11k
30 VIN4+
29 VREF-IN
28 VCONT(LOADING)
Power System GND
FR FR
PNP Tr
Collector
27 REG-OUT
3.3VREG
PNP Tr
(External PNP)
Base
26 REG-IN
33k
25 VIN3+
11k
24 VIN3-
23 VIN3
3.3VREG GND
22 GND-VREG
3.3VREG
Power Supply
21 VCC-VREG
33k
20 VIN2+
11k
19 VIN2-
48 NC
47 TBC
FIN2
46 FSC
45 DGND
FIN1
44 SLI
43 SLC
-
42 RFS
E
41 RFSM
+
40 CV
F
-
39 CV
38 SLOF
37 HFL
TB
36 TES
35 TOFF -
TE
34 TGL
TE
+
33 JP
TESI
SCI
TH
TA
-
TD
TD
JP
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2 9
8
Pin
Name
No.
5CH output change terminal, logic input of
1 REV
loading block
signal system power supply
2 S-Vcc
(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
Q Q
3 6 7 1 3 3.3V power output to which the PNP transistor
27 REG-OUT
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
Output change terminal (FWD) for loading
36 FWD
output (VLO+−), logic input of loading block
64 63 62 61 60 59 58
APC REF
RF DET
1
2
VCA
I/V
3
BAL VCA
INTER FACE
4
5
TE
6
7
8
T. SERVO & T.LOGIC
9
10
11
12
F.SERVO & F.LOGIC
13
14
15
16
.
17 18 19 20 21 22 23 24 25 26
9 4 2 8
Function
1 5 0 5 8 2 9 9 4
57 56 55 54 53 52 51 50 49
48 NC
47 TBC
FSC
46
-com
SLC
45 DGND
44 SLI
43 SLC
-
42 RFS
41 RFSM
RF Amp
+
40 CV
-
39 CV
SLOF
38
37 HFL
36 TES
35 TOFF
34 TGL
m
JP +
SPINDLE SLED SERVO
33
SERVO
co
27 28 29 30 31 32
9 9
2 8 9 9