McIntosh C2600 Service Manual page 7

2 CONTROL
751898 SCH 1 of 4
J7
1 2
USB1 - USB - USB + USB1 +
3 4
TCK TCK GND
5 6
TMS TMS GND
7 8
TDO TDO GND
9 10
TDI GND
TDI
11 12
EXT TXD TXD GND
13 14
EXT RXD RXD NRST NRST
15 16
ERASE TST +3.3V +3.3V BU
+3.3V BU
L8
R26
10
+3.3V M
+1.2V M
+3. 3VBU
J6:22
C34 C35
5 +3.3V BU
4.7µF .1µF
J6:23
+5VD
J6:20
5 +5V D
J6:21
VOL B
J6:15
5 VOL B
VOL A J6:14
VOL A
5
INP B J6:13
5 INP B
INP A J6:12
5 INP A
FR IR J6:9
5 FR IR
PW R J6:11
PW R
5
FP RST J6:10
FP RST
5
AD REF J6:2
5 AD REF
PB DET J6:3
5 PB DET
HP DET J6:1
5 HP DET
VF D CL J6:8
VF D CL
5
VF D DA J6:6
VF D DA
5
VF D CS J6:7
VF D CS
5
I2C CL 1
J6:4
I2C CL 1
5
8
+3.3V BU
7
I2C DA 1
J6:5
I2C DA 1 6
5
5
J6:16 R24 R25
GN D
J6:17 4.75k 4.75k
5
J6:18
J6:19
+3.3V BU +3.3V BU
+3.3V M
R31
22.1
USB1 -
USB1 +
R30
22.1
E RA S E
C41
12pF
Y1 12.00MHz
C42
12pF
+1.2V M
+3.3V M +1.2V M
C43 C40
.1µF .1µF
1
AD REF ADVREF
2
GND
C36
3
HP DET PB0/AD4
.1µF
4
PB1/AD5
PB DET
5
PB2/AD6
6
PB3/AD7
7
VDDIN
8
VDDOUT
9
IR CTRL PA17/PGMD5/AD0
10
PA18/PGMD6/AD1
CONV IR
11
PA21/PGMD9/AD8
DAC TXD
12
VDDCORE
13
PASS LT PA19/PGMD7/AD2
14
DAC RXD PA22/PGMD10/AD9
15
C37 PA23/PGMD11
REAR IR
4.7µF
16
PA20/PGMD8/AD3
FR IR
+3.3V M +1.2V M
C44 C39
.1µF .1µF
+3.3V M
+5V D
U10
R28
22.1 1
Vcc
4
2
GND U11
R29
22.1 1
Vcc
4
2
GND U12
R27
22.1 1
Vcc
4
2
GND
U9
1
VCC(B) VCC (A) +3.3V BU
2
SCLB SCLA I2C CL
3
SDAB SDAA I2C DA
4
EN GND
+3.3V BU
C38
.1µF
9
C2600
TCK
TMS
TDO
TDI
S1
C46
.1µF
+3.3V M
R34
1k
C47
.1µF
48
PA0/PGMEN0
47
PA1/PGMEN1
46
GND
45
VDDIO
+3.3V M
44
PA2/PGMEN2
43
PA3 I2C DA
42
PA30
41
PA29
U13
40
TST
39
NRST NRST
38
PA28
37
PA27/PGMD15
AUD DET
36
PA4/PGMNCMD I2C CL
35
PA5/PGMRDY
34
PA6/PGMNOE
33
TDI/PB4
RE S E T
S2
+3.3V M C49
.1µF
C48
.1µF
+1.2V M
+3.3V M
+3.3V M
R37
U14
47.5k
R44
1 10k
Vcc
4 1
Q3
2
GND
+3.3V BU
+3.3V BU
+3.3V BU
U15
R32 R35 R38 R160 1
A0
22.1 22.1 22.1 22.1k
2
A1
3
A2
4
RS232 SD Q 0
5
Q 1
6
Q 2
7
Q 3
8
VSS
R33 R36 R39
22.1k 22.1k 22.1k
A = 0 1 0 (2)
+3.3V BU +3.3V BU +3.3V BU
+5V
C51
.1µF
+5V
U16
1
Vcc
4
2
GND U18
1
Vcc
4
2
GND U21
1
Vcc
4
2
GND U17
1
Vcc
4
2
GND
+5V
+3.3V BU
C45
.1µF
R42
4.75k
+3.3V BU
+3.3V BU +3.3V BU
R43 U19
4.75k
1 8
VCC(A) VCC(B)
2 7
SCLA SCLB
3 6
SDAA SDAB
4 5
GND EN
R49
4.75k
+3.3V BU
+3.3V BU +3.3V BU
C52
.1µF
+3.3V BU
U20
8 1
VC C A0
7 2
WP A1
6 3
SC L A2
5 4
SD A GND
C50
.1µF
+3.3V BU +3.3V BU +3.3V BU +3.3V BU
1
Q4
16 R46 R47 R48
VDD
22.1k 22.1k 2.21k
15
SDA I2C DA
14
SCL
I2C CL
13
N C
12
Q 7 1
11
Q 6
2
10
Q 5
9
Q 4
+3.3V BU +3.3V BU
U22
U36
R124
1 1
Vcc 22.1 Vcc
4 4
MET ENA
2 2
GND GND
R45
22.1k
+3.3V BU
10
MET EN A
J9:16
M ET ENA 4
AU D DET
J9:11
AUD DET 4
R51
22.1
VOL CS
J9:15
VOL CS
4
R53
22.1
VOL DA
J9:13
VOL DA
4
R54
22.1
TON E CS
J9:12
TON E CS
4
R52
22.1
VOL CL
J9:14
VOL CL
4
I2C CL 2
J9:17
I2C CL 2
4
I2C DA 2
J9:18
I2C DA 2
4
J9:1
+5V
J9:2
+5V 4
J9:3
+3. 3VBU
J9:10
+3.3V BU 4
J9:9
J9:4
GN D
J9:5
4
J9:6
J9:7
J9:8
+15V
J8:12
+15V 4
J8:10 J8:11
-15V
J8:7 J8:8
R50
-15V 4
4.75k
J8:6
J8:4
GN D
J8:3
4
J8:1
J8:2
J10:8 J10:9 +3. 3V
+3.3V 3
J10:10 J10:11
J10:18 +3. 3VBU
+3.3V BU 3
J10:3 DAC TXD
DAC TXD
3
J10:1 DAC RXD
DAC RXD 3
J10:4 USB1 +
USB1 +
3
J10:5 USB1 -
USB1 -
3
J10:7 USB 1/2
USB 1/2
3
J10:6 USB OE
USB OE
3
J10:2 USB RST
USB RST
3
J10:12
J10:13 J10:14 GN D
+3.3V BU
3
J10:15 J10:17
C53 J10:16
.1µF
+3.3V BU
U23
R55
Vcc 22.1
4
PS ON
GND
R56 22.1
VFD ON