Block Diagram - Display Section; Block Diagram - Power Supply Section - Sony PLM-A55E Service Manual

4-4. BLOCK DIAGRAM – DISPLAY Section –
RG-46P BOARD
CN401
Y Y ATT Y BUFFER
13
Q407 Q401
R-Y
R-Y ATT R-Y BUFFER
11
Q402 Q408
B-Y B-Y ATT B-Y BUFFER
9
Q406 Q409
S1 ATT
D/A CONVETRTER
6
Q411
IC402
AGC 19
PICT 18
TO
SCK ATT
7
MAIN 5 17 D1 R-BRT
Q410
BLOCK
16 B-BRT 6
CLK
CSEVR
7 15 LD R-GAIN 3
B-GAIN 2
BRIGHT 5
CONT 4
XID 12
PLL 13
VIEW ANGLE
CORRECTION
V COM R 8
Q403,404
V COM L 9
HP R
3
HP PET
4
HP L
2
DS VOL
1
05
• Signal path
: VIDEO (Y)
: VIDEO (color difference signal)
: VIDEO (R. G. B)
: AUDIO
– 45 –
LCD VIDEO PROCESS,
LCD TIMING CONTROL
IC401
R OUT 39
FILTER 1 SYNC IN G OUT 41
B OUT 43
HCK1 29
2 Y IN
HCK2 28
50 R-Y IN HST1 27
VCK1 23
VCK2 22
49 B-Y IN
VST1 21
3 AGC ADJ VST2 20
CLR 25
24
5 PICT EN
55 R-BRT
CN403
B-BRT
56
63 R-GAIN
64 B-GAIN
60 BRIGHT
61
CONTRAST
35 X3D
31 VD
CN404
RPD CKI CKO
12 14 15
OSC
CN404
CN406
– 46 –
4-5. BLOCK DIAGRAM – POWER SUPPLY Section –
CN402
R
14
G
15
B
13
HCK1
11
HCK2
10
HST
9 LCD
VCK1 UNIT
5 RG-46P BOARD
RIGHT )
(
VCK2
SIDE
4
(1/2)
VST
3
CN401
CLR HVDD(13.5V) CN402
7 LCD UNIT 12 8
(RIGHT SIDE)
ENB VVDD(13.5V)
6 (2/2) 1
COM
16
R
14
HVDD(13.5V) CN403
LCD UNIT
G 12
15 (LEFT SIDE)
VVDD(13.5V)
B (2/2) 1
13
HCK1
11
HCK2
10
IC401 REGULATOR REGULATOR
HST LCD
Q405
9 B+ Q405
UNIT
VCK1 LEFT )
(
5
SIDE
VCK2
4 (1/2)
VST VIDEO CIRCUIT B+ 10
3
CLR
7
ENB
6
COM
16
8 R OUT
4 G OUT
6 B OUT
5 HP R
FOR CHECK
3 HP L
7
HP RET
9 PCO
2 EAC OFF
BACK LIGHT
UNIT
5 HP402
(HEADPHONE)
6 R
.
4
.
3
. HP401
1
(HEADPHONE)
L
2
FP-30
FLEXIBLE BOARD
3
4
RV401
VOL
FP-29
FLEXIBLE BOARD
SA-52P BOARD
CN701
UNREG
LED B+ 11
11
YM-11P BOARD CN901
TC301
DC/DC CONVERTER
D309
13.5V CN101 13.5V SWITCHING UNREG
7
REGULATOR
DC/DC
Q309
CONVERTER
IC301(1/2)
SA-52P
44 RE B OUT
BOARD
13 SCP:B
CN701
HEADPHONE SWITCHING
AU2V CN901 VCC 45
AMP(IC504)B+ 1 1 REGULATOR
(AUDIO CIRCUIT)
Q312
39 RE D OUT
CHARACTER
GENERATOR 29 SCP:D
DD POWER
(IC101)B+ CTL C/D 22
(VIDEO CIRCUIT) SWITCHING
DD MAIN
VIDEO 5V V5.0V POWER CONT 20
REGULATOR
5
Q310
EEPROM
D5.0V
CTL B 21
(IC901)B+
40 RE C OUT
(DIGITAL CIRCUIT)
24 SCP:C
A5.0V
AUDIO CIRCUIT
9 9
B+ CN701
CN901
SA-52P D310
SWITCHING BATT 8.4V/BL 7V
REGULATOR
Q313
BOARD
D311
SWITCHING
REGULATOR
Q313
CURRENT
LIMIT
BL 7V CN103
46 8
Q316
1
BL ON RE B OUT SCP;B
DC/DC
2
CONVERTER
IC301(2/2)
B IN
7
CHARGE
/BL SWITCH
Q314
05
– 47 –
PLM-A55E
SYSTEM
PS901
+5V
CONTROLLER
REGULATOR
(IC903)B+
IC902
(DIGITAL CIRCUIT)
D305 D304
DC
D306
UNREG F301
J301
DC IN 9V
- +
B+
SWITCH
Q302,303
Q301
BATTERY
TERMINAL
CHARGE
CN301
F302
B+
SWITCH 1 +
Q305,306
Q318
4 –
3
OFF:
BATTERY
+
PACK IN
DC IN
RESET
DETECT 2
A/D SWITCH SIGNAL
GENERATOR SWITCH
Q307
IC904 Q901
SW- 312P BOARD
CN702
2 2
S705
28 74 32 84 79 17 15 6 85 33 31 19 86 34
1 1
BATTERY PACK
DETECT
SYSTEM CONTROLLER
IC903
– 48 –