Sony STR-DB925 Service Manual

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To NJM2296 video select A
To NJM2296 video select B
To NJM2296 video select E
IC muting
Function muting
Hardware standby (Connected to power supply +5 V)
MD2 (To MB90553 MD2)
MD1 (Connect to power supply)
MD0 (To MB90553 MD0)
Reset (Connected to MB90553 U.RESET)
Ground (Connected to Ground)
External ceramic filter 4 MHz is connected to this terminal
External ceramic filter 4 MHz is connected to this terminal
Power supply +5 V
Flash memory rewrite (Connected to Ground)
Flash memory rewrite (Connected to Ground)
Tuner muting
Surround muting (Connected to Ground)
Input terminal for switching AUDIO DECODER which is using (Connected to Ground)
Not used (Connected to Ground)
Front speaker A relay
Front speaker B relay
Center speaker relay
Rear speaker relay
Sub Woofer relay
Head phone relay
Power relay
Direct pass relay
Digital input select 2 (74HC151)
Digital input select 1 (74HC151)
Digital input select 0 (74HC151)
Test port 0 (Not connected, open)
Test port 1 (Not connected, open)
Test port 2 (Not connected, open)
Not used (Connected to Ground)
Not used (Connected to Ground)
Not used (Connected to Ground)
Not used (Connected to Ground)
Ground (Connected to Ground)
Not used (Connected to Ground)
VIDEO-A
VIDEO-B
VIDEO-E
ACMUTE
FUNMUTE
HSTX
MD 2
MD 1
MD 0
RESET
VSS
X 0
X 1
VCC
P 00
P 01
TUNER MUTE
SURR MUTE
925,919/725,825,818
—
RY-FRONT/A
RY-FRONT/B
RY-CENTER
RY-REAR
WOOFER-RY
RY-HP
RY-POWER
RY-DIR-PASS
DIG-IN 2
DIG-IN 1
DIG-IN 0
TEST 0
TEST 1
TEST 2
—
—
—
—
VSS
—
Pin No. Pin Name I/O Function

Sony STR-DB925 Specifications

General

Brand	Sony
Model	STR-DB925
Category	Stereo Receiver
Language	English