Sony HCD-DV2D - Page 40

4040
HCD-DV2D
HCD-DV2D
•Waveforms
– MAIN Board –
– MPEG Board –
1 IC501 ej (XT2)
30.5 µs
5.3 Vp-p
1 V/DIV, 10 µ s/DIV
2 IC501 r; (X2)
120 ns
5.0 Vp-p
1 V/DIV, 50 ns/DIV
3 Q212 (collector)(TAPE REC)
10.7 µs
91.2 Vp-p
20 V/DIV, 5 µ s/DIV
4 U707 <zcv (XIN)
58.9 ns
3.9 Vp-p
1 V/DIV, 25 ns/DIV
5 UD705 <zn/ (XO)
37 ns
3.5 Vp-p
1 V/DIV, 10 ns/DIV
7 UD705 <zm/ (CVBS/C)
H
950 mVp-p
500 mV/DIV, 10 µ s/DIV
6 UD705 <zn. (CVBS/G/Y)
(AEP,UK,RU)
H
640 mVp-p
500 mV/DIV, 20 µ s/DIV
9 UD705 <zmc (C/B/U)
(AEP,UK,RU)
H
592 mVp-p
500 mV/DIV, 20 µ s/DIV
8 UD705 <zmx (Y/R/V)
(AEP,UK,RU)
H
530 mVp-p
500 mV/DIV, 20 µ s/DIV
IC651 uPD16315GB-3BS
• IC Block Diagrams
– KEY Board –
1
2
3
4
5
4-bit latch
24-bit output latch
12-bit shift register
Data selector
6
7
8
9
10
11
12 13 14 15 16 17 18 19 20 21 22
23
24
25
26
27
28
29
30
31
32
33
3435363738
Serial
interface
OSC
Timing generator
key scan
Display memory
24 bits x 12 words
Key data memory
(2 x 16 bits)
Command decoder
segment driver
Grid driver
Multiplexed driver
394041424344
LED1
LED2
LED3
LED4
OSC
DOUT
DIN
CLK
STB
KEY1
KEY2
VSS
VDD
SEG1/KS1 SEG2/KS2 SEG3/KS3 SEG4/KS4 SEG5/KS5 SEG6/KS6 SEG7/KS7 SEG8/KS8 SEG9/KS9
SEG10/KS10
SEG20/GRID9 SEG21/GRID8 SEG22/GRID7 SEG23/GRID6 SEG24/GRID5 GRID4 GRID3 GRID2 GRID1 VDD VSS
SEG11/KS11
SEG12/KS12
SEG13/KS13
SEG14/KS14
SEG15/KS15
SEG16/KS16
VEE
SEG17/GRID12
SEG18/GRID11
SEG19/GRID10
Ver. 1.2