Philips HDRW720 Service Manual page 173

Circuit-, IC descriptions and list of abbreviations
9.10.2IC's Analog Board
IC7408: STV6618 Analog Board, Video Switch Matrix
1.2 Pin Description
Pin No. Symbol
1 Y/CVBSIN_TUN
2 DIGOUT3
3
4 CVBSIN_ENC
5
6 CIN_ENC
7 YIN_ENC
8
9 R/PR/CIN_ENC
10 G/YIN_ENC
11 B/PBIN_ENC
12
13 B/PBIN_AUX
14 DIGOUT4
15 G/YIN_AUX
16 DIGOUT5
17 R/PR/CIN_AUX
18 DIGOUT6
19 Y/CVBSIN_AUX
20 VCCB_REC
21 Y/CVBSOUT_REC
22 GNDB_REC
23 COUT_AUX
24 VCCB1
25 Y/CVBSOUT_AUX
26
27 B/PBOUT_TV
28 C_GATE
29 G/YOUT_TV
30 VCCB2
31 R/PR/COUT_TV
32 VCCB3
33 Y/CVBSOUT_TV
34 FBOUT_TV
35 FBIN_AUX
Y/CVBS Input from Tuner
Digital Output Pin 3
GND1 Ground Supply 1 for Video Inputs
CVBS Input from Encoder
DECV Video decoupling capacitor
Chroma Input from Encoder
Y Input from Encoder
V
+5 V Power Supply for Video Inputs
CC
Red or Pr or Chroma Input from Encoder
Green or Y Input from Encoder
Blue or Pb Input from Encoder
GND2 Ground Supply 2 for Video Inputs
Blue or Pb Input from Auxiliary (SCART2 or external Cinch)
Digital Output Pin 4
Green or Y Input from Auxiliary (SCART2 or external Cinch)
Digital Output Pin 5
Red or Pr or Chroma input from Auxiliary (SCART2 or external Cinch)
Digital Output Pin 6
Y/CVBS Input from Auxiliary (SCART2 or external Cinch)
Video Output Recorder Buffer Supply Pin
Y/CVBS Output to Recorder
Ground Supply for Recorder Buffer
Chroma Output to Auxiliary (SCART2 or external Cinch)
Video Output Buffer Supply Pin
Y/CVBS Output to Auxiliary (SCART2 or external Cinch)
GNDB Ground Supply for Video Buffer
Blue or Pb Output to TV (SCART1 or external Cinch)
External Transistor Command for Bidirectinnal B/C SCART I/O
Green or Y Output to TV (SCART1 or external Cinch)
Video Buffer
Red or Pr or Chroma Output to TV (SCART1 or external Cinch)
Video Output Buffer Supply Pin
Y/CVBS Output to TV (SCART1 or external Cinch)
Fast Blanking Output to TV (SCART1)
Fast Blanking Input from Auxiliary (SCART2)
HDRW720/0x, DVDR725H/0x
Description
9. EN 173