NAD C 546BEE, Руководство по обслуживанию

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IC BLOCK DIAGRAM
MAIN BOARD
U1: DS1233DZ-5+T&R
MAIN BOARD
U2, U207, IC202: NJM7805FA-#ZZZB
U205: NJM7809FA
U206: 6V 3-TERMINAL REGULAT OR NJM7806
IC203: NJM7812FA-#ZZZB
2 4 3
1
GND
GND
Vcc RESET
OUT
IN
GND
MAIN BOARD
U3: QUAD 2INPUT EXCLUSIVE
1
2
3
4
5
6
7 14
13
12
11
10
9
8
1A
1B
1Y
2A
2B
2Y
GND
V
CC
4B
4A
4Y
3B
3A
3Y
MAIN BOARD
U201: SN74HCU04D (SOP)
1 1A 14 VAC
2 1Y 13 6A
3 2A 12 6Y
4 2Y 11 5A
5 3A 10 5Y
6 3Y 9 4A
7 GND 8 4Y
MAIN BOARD
U210, U211: OPA2134PA DIP OP AMP
1
B A
2
3
4
Out A
-In A
+In A
V-
8
7
6
5
V+
OUT B
_In B
+In B
+ Ð Ð +
SERVO BOARD
IC1: NJM7805FA-#ZZZB
MAIN BOARD
U204: NJM7912FA-#ZZZB
OUT IN
GND