Marantz SM-11S1 Service Manual page 58

P307 / QU02 : AT24C08A
P307 / QU03, QU04 : 74HC4094
QU03 : 74HC4094
Pin Port I/O
1 CE IN
2 DATA IN
3 CLK IN
4 Q1 OUT
5 Q2 OUT
6 Q3 OUT
7 Q4 OUT
8 GND
9 QS OUT
10 Q'S OUT
11 Q8 OUT
12 Q7 OUT
13 Q6 OUT
14 Q5 OUT
15 OE IN
16 VCC
QU04 : 74HC4094
Pin Port I/O
1 CE IN
2 DATA IN
3 CLK IN
4 Q1 OUT
5 Q2 OUT
6 Q3 OUT
7 Q4 OUT
8 GND
9 QS OUT
10 Q'S OUT
11 Q8 OUT
12 Q7 OUT
13 Q6 OUT
14 Q5 OUT
15 OE IN
16 VCC
g
Name Function
STROBE
DATA
SPK_1 Speaker output relay ON
SPK_2 Speaker output relay ON
GND
0dB *1
+6dB *1
BAL_L Balanced input relay ON
OUTPUT
ENABLE
VCC
Name Function
STROBE
DATA
BAL Balanced Input LED ON
UN-BAL Unbalanced Input LED ON
SP2 Speaker output LED ON
GND
DISP_ON Side illuminations LED ON
SP1 Speaker output LED ON
OUTPUT
ENABLE
VCC
Description
Active H
Active H
*1 *1 Gain adjustment relay function
*1
Active H
+6dB
Description
Active H
Active H
Active H
Active H
Active H
70
0dB(11pin) 6dB(12pin)
-6dB L L
0dB H L
L H