Sony PLM-A55E, Руководство по обслуживанию

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YM-11P BOARD IC201 CXA1950Q-T4 (RGB DECODER)
Pin No. Pin Name I/O Function
1 HUE ADJ I HUE adjustment signal input from the D/A converter (IC202)
2 APCTC I
APC (color synchronization) time constant and VXO free-run frequency adjustment signal input
from the D/A converter (IC202)
3
VXO2 — System clock connection terminal (4.433619 MHz)
4 VXO1 — System clock connection terminal (4.433619 MHz)
5
SC OUT O Subcarrier output to the A/D, D/A converter (IC103) for Y/C separator
6
GND2 — Ground terminal (chrominance system)
7 VCC2 — Power supply terminal (+5V) (chrominance system)
8 B/B-Y O
RGB B (blue) or RGB matrix color difference signal (B–Y) output terminal
Output of the RGB matrix color difference signal (B–Y) in this set
9
G/Y O RGB G (green) or brightness signal output terminal Not used (open)
10 R/R-Y O
RGB R (red) or RGB matrix color difference signal (R–Y) output terminal
Output of the RGB matrix color difference signal (R–Y) in this set
11
DLAIN I Delay line amplifier input from the CCD delay line (IC203)
12 COUT O Chroma signal output to the CCD delay line (IC203)
13
ACKTC — Connected to the time constant circuit for ACK (auto color killer)
14
DLABIAS I
Setting terminal for the video mode (NTSC/PAL)
“L”: NTSC mode, “H”: PAL mode (fixed at “H” in this set)
15 SYNC O Composite sync signal output terminal “L” active Not used (open)
16 BF O
Burst flag signal output terminal “L” active Not used (open)
17 YCLPTC — Connected to the time constant circuit for pedestal clamp
18 ACKOUT O
ACK (auto color killer) on/off check signal output terminal
“L”: ACK on (when APC is unlocked), “H”: normal (when APC is locked) Not used (open)
19 ALTOUT O Alternate pulse output in PAL mode Not used (open)
20 SYNCTC — Connected to the time constant circuit to clamp sync chip for the sync separation
21 VCLPTC — Connected to the time constant circuit for pedestal clamp
22 VREG O Regulated power supply output terminal (+4.2V)
23 OUTSW I
For output mode selection Changing over this terminal selects whether RGB signals or color
difference signals are output from the
8
to
!º
pins
“L”: color difference signal output, “H”: RGB output (fixed at “L” in set)
24 VIDEO IN I Brightness signal input terminal
25
VCC1 — Power supply terminal (+5V) (brightness signal system)
26
GND1 — Ground terminal (brightness signal system)
27
SHPCTL I For adjusting the sharpness gain Fixed at center voltage in this set
28 SHPF0 I For adjusting the frequency for sharpness filter
29 TPADJ — For setting the timing of internal pulses
30 CADJ I Chroma amplifier gain adjustment signal input from the D/A converter (IC202)
31 ACCTC — Connected to the time constant circuit for ACC (auto color control)
32 CIN I Chroma signal input terminal