Service manual

SERVICE MANUAL (BSV-4251 BSV-4251A )
7 ( POWER ) I 5V / 0V LOCAL KEY INPUT PORT FOR POWER
8 ( VOL+ ) I 5V / 0V LOCAL KEY INPUT PORT FOR VOL +
9 ( VOL- ) I 5V / 0V LOCAL KEY INPUT PORT FOR VOL -
10 ( SRC/SEL ) I 5V / 0V LOCAL KEY INPUT PORT FOR SOURCE
11 (MENU) I 5V / 0V LOCAL KEY INPUT PORT FOR MENU
12 (CH-) I 5V / 0V LOCAL KEY INPUT PORT FOR CH-
13 (CH+) I 5V / 0V LOCAL KEY INPUT PORT FOR CH+
1 ( 32V ) I 32V Audio AMP POWER INPUT PORT
2 ( 32V ) I 32V Audio AMP POWER INPUT PORT
3 ( GND ) 0V Audio AMP POWER GROUND PORT
J9
4 ( GND ) 0V Audio AMP POWER GROUND PORT
1 ( L OUT ) O
Audio AMP LEFT OUTPUT PORT( 8 §Ù )
2 ( L GND ) Audio AMP LEFT GROUND PORT
3 ( R OUT ) O
Audio AMP RIGHT OUTPUT PORT ( 8 §Ù )
J10
4 ( R GND ) Audio AMP RIGHT GROUND PORT
1 ( S-SCL ) RS-232C CLOCK LINE
2 ( S-SDA ) RS-232C DATA LINE
3 ( FS )
J11
4 ( GND ) 0V
1 ( VCC5 ) I 5V 5V Input
2 ( VCC5 ) I 5V 5V Input
3 (SCART_R) I
0.7Vpp±0.1pp
SCART RED INPUT PORT
4 (SCART_G) I
0.7Vpp±0.1pp
SCART GREEN INPUT PORT
5 (SCART_B) I
0.7Vpp±0.1pp
SCART BLUE INPUT PORT
6 (SCART_FB) I +1V to +3V / 0V to 0.4V SCART FAST BLANKING
7 ( GND ) 0V
8 (FSCART_CVBS_IN) I
1.0Vpp±3dB
SCART1 CVBS INPUT PORT
9 ( GND )) 0V
10 (HSCART_CVBS_IN) I
1.0Vpp±3dB
SCART2 CVBS INPUT PORT
11 ( GND ) 0V
12 ( FSCART_ID ) I 4:3 / 16:9 VIDEO STATUS
13 ( HSCART_ID ) I 4:3 / 16:9 VIDEO STATUS
14 ( GND ) 0V
15 (F_CVBS_OUT) O
1.0Vpp±3dB
SCART1 CVBS OUTPUT PORT
16 ( GND ) 0V
17 (H_CVBS_OUT) O
1.0Vpp±3dB
SCART2 CVBS OUTPUT PORT
18 ( GND ) 0V
19 (F_CVBS_L_OUT) O
0.5Vrms±3dB
SCART1 AUDIO LEFT OUTPUT PORT
20 (F_CVBS_R_OUT) O
0.5Vrms±3dB
SCART1 AUDIO RIGHT OUTPUT PORT
21 ( GND ) 0V
22 (H_CVBS_L_OUT) O
0.5Vrms±3dB
SCART2 AUDIO LEFT OUTPUT PORT
J1
23 (H_CVBS_R_OUT) O
0.5Vrms±3dB
SCART2 AUDIO RIGHT OUTPUT PORT
MODEL NAME DOCUMENT NO REVISION NO REVISION DATE PAGE
BSV-4251/4251A RD(1) 00 03/10/23 19/75