Panasonic CY-VHD9401U Service Manual page 44

CY-VHD9401U
19.2. Main Block -2
To E-4C280b CN1
To
E-4C928ZBa
CN2
5V
IC150
2V/DIV,1us/DIV
BUFFER
2V/DIV,1us/DIV
4.7
R
R
L
0
2.3 2.3
0.9 0.9
Q250
L
MUTE
R YEADAP202KTX
IC211
AMP
5.3 9.3
5.1
0
5.3
Q450 4.4 5.3
2SB0709AWL 5.3
5.0
Q450 0
5.0
VIDEO
AMP C0ABBB000090
9.3
5.9 Q362
5.3 V
REF
R L
9V
D251
MA3X15300L
Q351
B1GBCFNN0004
Q251 Q251 Q351
B1GBCFNN0004
BUFFER BUFFER
IC261
ANALOG SWITCH
The following symbols are
shown on the schematic diagram.
+B
Acc
10V 10V
9V 9V
5V 5V
3.3V 3.3V
1.8V
1.8V
VISUAL
AUDIO (L,R)
To E-4C928ZBb CN3
To E-4C279 CN901
R L
5V
R L
9V
L
R
0 4.7 0
4.7
4.7 4.7 4.7 4.7
4.7
4.7 4.7
9.3 4.7 9.3 4.7
C0ABBB000090 C0ABBB000090
R
L L
9V
IC330
IC340
AMP
AMP
R L R L
IC402
SYNC SEPARATER
IC401
AV SW
4.7
5.2 R
4.7
5.4
4.1
2V/DIV,50us/DIV 0.5V/DIV,20us/DIV
L
4.7
4.4
L 4.7
2V/DIV,50us/DIV
C1AB00000284
R 4.7
4.6
4.4
9.3 4.1
0 0.5V/DIV,20us/DIV
4.1
0.1
L R
L R
To E-4C279 CN902
E-4C280a
R
L
5V
Q801–804,807
DC-DC CONVERTER
B1BDEL000001 10.7 11.8
8.9 9.0
10.7 11.8
Q805,806 8.3
10.7
11.8
POWER
6.2
CONTROL
10.7
6.2 11.8
Q803
YEANFB1F3PT1 2SD0601AHR
0
3.6 6.7
5.0
4.4 0
2SB0709AWL
0
6.2
Q460
VIDEO
2SB0709AWL
BUFFER 0
IC801
DC-DC
CONVERTER
9V
9V
Q707,719
+9V REG
B1GBNCEJ0001
B1BBCG000002 12.0
9.3 12.0 12.0
9.9
0
D708
YEADRD91M2T2
Q706
B1GBCJJ0002
0
D709
YEADDAN202KT
4.8
0
Q853,854
POWER CONTROL
12.3 YEANAFP1F3PT1
12.3
0
0
Q850–852
4.4
B1GDCFJJ0002
Q855–Q857 ON/OFF
12.0 0 0
B1GBCJJ0002
ON/OFF DRIVE DRIVE
1.7 2.5
12.3 0.9 0
Q856
2SD0601AHR 1.2 1.2
6.9 1.2 2SD0601AHR
1.4 1.3
12.3
12.3
2.0
12.1 2.0 4.7
12.0
8.3 10.8
12.3
0 12.3
7.2
B0ADCJ000012
B0ADJC000012
5V
IC850
DC-DC CONVERTER
R
L
3.3V
5V
IC140 IC130
BUFFER BUFFER
3.3 3.3
5.0 5.0
4.9
0
4.8
3.2
C0JBAA000115 C0JBAA000115
44
R
L
R
L
Q470
VIDEO AMP
11.9
11.8
0 5.1
Q470
0
2SB0709AWL 2SB0709AWL
Q720,721
4.4
VOLT CHECK
Q703 IC720
IC701 Q720
VOLT CHECK
+5V REG B1BBCG000002
+5V REG
B0JCRC000002
YEANC3618
1.8
5.6 11.6
11.1
1.7
0
2.7 12.0
0
C0CBAYA00006
0
1.4 1.8
11.1
Q802 2.7
0 1.8
B1GBCFJJ0002
C0ABAB000001 0
9V
Q721
2SB1572T1
Q705,706
POWER
CONTROL
IC730
B0JCRC000002
+10V REG
5.2 11.0
5V
5.8
YEANC3618
Q704
+5V REG
AN8065SE1
10V
IC702
+B/ACC DET RESET
B1GDCFJJ0002 R
0 12.3
R
R
12.2
Q852
5.1
12.3 IC121
12.0
5.1 AMP
4.0
L
L
R
IC121
C0ABBB000090
R L
L
10V
3.3V
5V
10V
IC120
+1.8V REG
3.4 1.8V 1.8V
0
0
3.1
3.1
0 3.3V
0
0
5V
Q130,131
B1GBCJJ0002
Q130,131
BUFFER
Q770
BUFFER
Q701,702
POWER
CONTROL
B0BA04700003
B1BDEL000001
12.2 12.3
12.2
11.5
5.4
2.7 0
0
Q770
YEANC114YKX
0
3.6
0
YEANFB1F3PT1
B0ECKL000001
YEADSR1544TL
B0ACCK000005
To DVD Deck Ass'y
L
L
R
R
To DVD Deck Ass'y
CY-VHD9401U MAIN-2