Inter-m IMX-824, Service Manual

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CN1 Signal I/O
Pin Signal Remarks Pin Signal Remarks
1 Return in L+ 9 Insert Send +
2 Return in L- 10 Insert Send - Chassis
3 Return in R+ 11 Insert
4 Return in R- 12 Insert Return - Chassis
5 Audio GND 13 Audio GND
6 AUX out+ 14 Sub-group out+
7 AUX out- 15 Sub-group out-
8 Audio GND 16 Post fader out VU meter send
CN2 Signal Link
Pin Signal Remarks Pin Signal Remarks
1 AUX8 pot Wiper out 9 O/P AFL bus
2 AUX7 pot Wiper out 10 n.c.
3 Audio GND 11 n.c.
4 Return PF R out 12 n.c.
5 Return PF L out 13 n.c.
6 Return AF mono in AUX pot send 14 Meter return Peak meter signal
7 n.c. 15 n.c.
8 n.c. 16 n.c.
CN3 BUS I/O
Pin Signal Remarks Pin Signal Remarks
1 n.c. 2 n.c.
3 n.c. 4 n.c.
5 n.c. 6 O/P AFL status Active=0V
7 n.c. 8 MTX4 bus
9 O/P AFL bus 10 MTX3 bus
11 n.c. 12 MTX2 bus
13 n.c. 14 MTX1 bus
15 n.c. 16 n.c.
17 n.c. 18 n.c.
19 n.c. 20 n.c.
21 n.c. 22 n.c.
23 n.c. 24 mix bus common
25 MIX C bus 26 0V ref
27 MIX R bus 28 0V ref
29 MIX L bus 30 -18V
31 n.c. 32 -18V
33 n.c. 34 -18V
35 n.c. 36 0V
37 n.c. 38 0V
39 n.c. 40 0V
41 n.c. 42 +18V
43 n.c. 44 +18V
45 n.c. 46 +18V
47 MTX bus in 48 MIX bus in
49 n.c. 50 n.c.
CN4 MIX Fader I/O
Pin Signal Remarks
1 Bottom 0V
2 Wiper signal out
3 Top signal in
1)Meter off set minimizing
This alignment minimizes DC off set voltage of peak-meter rectifier.
ADJUST POINT SVR1
CONDITION Rout signal from any inputs to sub-group.
Let sub-group output –36dBu signal by using fader or by reducing input level. Adjust semi-volume to light “-36” LED
Make sure this LED doesn’t light when signal level is –37dBu.