Sony STR-DB870 Service Manual

50
STR-DB870/DB1070
• DIGITAL BOARD IC1703 MB91154PMT2-G-102-E1 (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Description
1
H.P IN I
Headphone detect signal input from the HP jack (J749) “H”: active
2 SP A RY O
Front speaker A relay drive signal output terminal “H”: relay on
3 H/P RY O
Headphone relay drive signal output terminal “H”: relay on
4 WOOFER RY O
Woofer speaker relay drive signal output terminal “H”: relay on
5 REAR RY O
Rear speaker drive signal output terminal “H”: relay on
6 CENTER RY O
Center and surround back speakers drive signal output terminal “H”: relay on
7 2ND AUDIO RY O
2nd audio relay drive signal output terminal “H”: relay on
8 PRE RY O
Pre relay drive signal output terminal “H”: relay on
9VSS—
Ground terminal
10 SB RY I
Center and surround back speakers drive signal output terminal “H”: relay on
11 C.JOG I
Jog dial pulse input from the RV1901 (jog dial) A phage input
12 C.JOG I
Jog dial pulse input from the RV1901 (jog dial) B phage input
13 F.JOG I
Jog dial pulse input from the RV1801 (FUNCTION) A phage input
14
F.JOG I
Jog dial pulse input from the RV1801 (FUNCTION) B phage input
15
V.JOG I
Jog dial pulse input from the RV1601 (MASTER VOLUME) A phage input
16
V.JOG I
Jog dial pulse input from the RV1601 (MASTER VOLUME) B phage input
17 SP.SW I
Speaker ON/OFF signal input terminal “L”: speaker on
18 POWER.RY O
Power relay drive signal output terminal “H”: relay on
19
TUNER AUTO STOP
I
Tuned display auto stop detect signal input from the FM/AM tuner unit “L”: active
20 TUNER MUTE O
Muitng control signal output to the FM/AM tuner unit “L”: muting
21
DATA O
Serial data output to the FM/AM tuner unit, LED drive (IC1602), function switch (IC101,
102, 105, 201) and electrical volume (IC401, 501, 601, 701)
22
CLK O
Serial data transfer clock signal output to the FM/AM tner unit, LED drive (IC1602), function
switch (IC101, 102, 105, 201) and electrical volume (IC401, 501, 601, 701)
23
TUNER DATA IN I
PLL data input from the FM/AM tuner unit
24
F. SW LAT O
Serial data latch pulse output to the function switch (IC101, 102, 105, 201) and electrical
volume (IC401, 501, 601, 701) “H”: active
25
TUNER STEREO I
FM stereo detection signal input from the FM/AM tuner unit “L”: stereo
26 VSS —
Ground terminal
27 VCC —
Power supply terminal (+3.3V)
28 RDS DATA O
RDS sireal data output to the RDS decoder (IC1303) (AEP, UK models only)
29
VIDEO SW1 O
Video select signal output to the video switch (IC308) and S-VIDEO switch (IC750, 752)
30
VIDEO SW2 O
Video select signal output to the video switch (IC308) and S-VIDEO switch (IC750, 752)
31
VIDEO SW3 O
Video select signal output to the video select switch (IC308) and S-VIDEO select switch
(IC750, 752)
32
VIDEO SW4 O
Video select signal output to the video select switch (IC308) and S-VIDEO select switch
(IC750, 752)
33
VSYNC I
Vertical synchronized signal input from the LA7213 (IC309, 311) (DB1070: AEP, UK,E,
Chinese models only)
34
P/N O
NTSC/PAL select signal output terminal “L”: NTSC (DB1070: US, Canadian models)
“H”: PAL (DB1070: AEP, UK,E, Chinese models)
35
HDOUT1 I
Host serial data input from the audio DSP1 (IC1501)
36, 37
OPT B, OPT A O
Digital input select signal output to the select switch (IC1406)
38
LED CE O
Chip enable signal output to the LED driver (IC1602)
39
LED CLR O
Clear signal output to the LED driver (IC1602)
40
TUNER LAT O
Tuner latch signal output to the FM/AM tuner unit

Sony STR-DB870 Specifications

General

Brand	Sony
Model	STR-DB870
Category	Stereo Receiver
Language	English