Sony STR-DB840 Service Manual

45
IC501, 601, 701 uPC2581V (MAIN Board)
IC1005 TC74ACT153AF (EL) (DIGITAL Board)
2
3
5
4
6
7
98
1
MUTE
+ VOUT1 – VOUT1
COMP1
MF1
IN1
GND
IN2
NF2
COMP2
– VOUT2 + VOUT2
VCC1 VCC2
VEE
PROTECTOR
BIAS CIRCUIT
REG DRIVE
PRE
DRIVE
11
10
12
13
1514
DRIVE
PRE
DRIVE
16 15 14
13 12
11
10
9
1
2
3
4 5
6
7
8
2G
2C3 2C2 2C1 2C0 2Y
VCC 2C3 2C2 2C1 2C0
STROBE
2G
OUTPUT
2Y
A
SELECT
DATA INPUTS
BBAA
BBAA
1G
1C3 1C2 1C1 1C0 1Y
STROBE
1G
B
SELECT
1C3 1C2 1C1 1C0 OUTPUT
1Y
GND
DATA INPUTS

Sony STR-DB840 Specifications

General

Digital inputs	2 Optical, 1 Coaxial
Power output	100 watts per channel into 8Ω (stereo)
Frequency response	10Hz to 100kHz
Total harmonic distortion	0.09%
Input sensitivity	2.5mV (MM), 200mV (line)
Speaker load impedance	8 ohms
Dimensions	430 x 157mm
Tuning range	FM, MW
Video Connections	composite