Sony STR-DB725 Service Manual page 29

Pin No. Pin Name
DIRECT.PASS
41
SUR.RY
42
43
CENTER.RY
44 FRONT.RY
45 MIX/SUB.RY
VDD.+5V
46
47 PROTECTOR.IN
48 POWER.RY
BASS.BOOST
49
50 SP.OFF
51 VOL–
52 VOL+
53 RE.A
RE.B
54
55
VOL LED
56 POWER.KEY
5.1.INPUT. LED
57
58 DIRECT.PASS.LED
59 MUTING.LED
60
TONE.LED
SURR.LED
61
INDEX.LED
62
63
PHONO.LED
64 TUNER.LED
65 CD.LED
MD/TAPE.LED
66
67
TV/DBS.LED
68 VIDEO3.LED
VIDEO2.LED
69
70 VIDEO1.LED
71 to 78 P1 to P8
79
VLOAD
P9 to P17
80 to 88
G12 to G1
89 to 100
• Abbreviation
FL : Fluorescent indicator tube
I/O
O
Direct pass relay
O
Surround relay
O
Center relay
O
Front relay
O Mix/sub relay
—
+5 V
I
Protector in
O Power relay
O
Bass boost
I Speaker off
O
Volume –
O
Volume +
I Function control A
I
Function control B
O Volume LED
I
Power switch in
O
5.1/DVD input LED
O Direct pass LED
O
Muting LED
O Tone LED
O
Surround LED
O
Index LED
O PHONO LED
O
TUNER LED
O CD LED
O
TAPE/MD LED
O TV/LD LED
O
VIDEO 3 LED
O
VIDEO 2 LED
O VIDEO 1 LED
O
FL segment signal output
— FIP pull down (–35 V)
O
FL segment signal output
O
FL gride signal output
– 47 –
Function