Telex 1505 service manual Card Edge Connector Pin Assignments Solder Side, Component Side

Table 4. Card Edge Connector Pin Assignments (Solder Side)

Card	Alt #1		Alt #2	Function	User Connection
Edge	Conn		Conn
1		A	A	Ch #4 Rx Bal. Line In (-)
3		B	B	Ch #4 Rx Mute
5		C	C	Ch #4 Rx Bal. Line In (+)
7		D	D	Ch #4 Rx UnBal Line In
9		E	E	Ch #3 Rx UnBal Line In
11		F	F	Ch #3 Rx Bal Line In (+)
13		H	H	Ch #3 Rx Bal. Line In (-)
15		J	J	Ch #2 Rx Bal. Line In (-)
17		K	K	Ch #3 Rx Mute
19		L	L	Ch #2 Rx UnBal Line In
21		M	M	Ch #2 Rx Bal Line In (+)
23		N	N	Ch #2 Rx Mute
25		P	P	Ch #1 Rx Unbal Line In
27		R	R	Ch #1 Rx Bal Line In (+)
29		S	S	Ch #1 Rx Bal. Line In (-)
31		T	T	Ch #1 Rx Mute
33		U	U	Ch #4 Tx Bal. Line Out (+)
35		V	V	Ch #3 Tx Bal. Line Out (+)
37		W	W	Ch #2 Tx Bal. Line Out (+)
39		X	X	Pos. 12 Vdc Return (Gnd)
41		Y	Y	Ch #1 Tx Bal. Line Out (+)
43		Z	Z	No Connection
45			AA	Sum Audio Out
		A
47			BB	Mic Audio In
		B
49			CC	Mic PTT
		C
51			DD	N/A
		D
53			EE	No Connection
		E
55			FF	Position 12 Vdc Input
		F
				(Component Side)
Card	Alt #1		Alt #2	Function	User Connection
Edge	Conn		Conn
2	1		1	No Connection
4	2		2	Ch #4 RXAGND
6	3		3	Ch #4 Mute Gnd
8	4		4	No Connection
10	5		5	No Connection
12	6		6	Ch #3 RXAGND
14	7		7	Ch #3 Mute Gnd
16	8		8	No Connection
18	9		9	No Connection
20	10		10	Ch #2 RXAGND
22	11		11	Ch #2 Mute Gnd
24	12		12	No Connection
26	13		13	No Connection
28	14		14	Ch #1 RXAGND
30	15		15	Ch #1 Mute Gnd
32	16		16	No Connection
34	17		17	Ch #4 Tx Bal. Line Out (-)
36	18		18	Ch #3 Tx Bal. Line Out (-)
38	19		19	Ch #2 Tx Bal. Line Out (-)
40	20		20	Pos. 12 Vdc Return (Gnd)
42	21		21	Ch #1 Tx Bal. Line Out (-)
44	22		22	Sum Audio In
46	23		23	Earpiece Audio Out
48	24		24	Speaker Mute
50	25		25	MICAGND
52	26		26	No Connection
54	27		27	N/A
56	28		28	Pos. 12 Vdc Input

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