Signal Name Abbreviations - Philips VR550 Service Manual

Signal Name
16P SCART 16Pin Control Signal
SCART 1 8Pin Output Control
8POUT-1
Signal
SCART 2 8Pin Output Control
8POUT-2
Signal
A-COM Audio Head Common
A-IN Audio Signal Input
A-MODE Hi-Fi Tape Detection Signal
Audio Mute Control Signal (Mute
A-MUTE-H
= "H")
A-OUT Audio Signal Output
Normal Audio Play Back/Record
A-PB/REC
Signal
AE-H Audio Erase Head
Automatic Frequency Control
AFC
Signal
AGC IF AGC Comparator Signal
Always +12V with AC Plug
AL+12V
Connected
Always +12V/+20.5V with AC
AL+12V/+20.5V
Plug Connected
Always +15V with AC Plug
AL+15V
Connected
Always +9V with AC Plug
AL+44V
Connected
Always +5V with AC Plug
AL+5V
Connected
Always +9V with AC Plug
AL+9V
Connected
AMPC CTL AMP Connected Terminal
AMPVcc AMPVcc
AMPVREF IN V-Ref for CTL AMP
AMPVREF OUT V-Ref for CTL AMP
A/D Converter Power Input/
AVcc
Standard Voltage Input
C-CONT Capstan Motor Control Signal
Capstan Motor FWD/REV
C-F/R Control Signal (FWD="L"/
REV="H")
Capstan Motor Rotation
C-FG
Detection Pulse
C-POW-SW Capstan Power Switching Pulse
Color Phase Rotary Changeover
C-ROTA
SIgnal
C-SYNC Composite Synchronized Pulse

SIGNAL NAME ABBREVIATIONS

Function
Signal Name
CLKSEL
CTL (+)
CTL (-)
CTLAMPout
D-CONT
D-PFG
D-REC-H
D-V-SYNC
DRV-CLK
DRV-DATA
DRV-STB
END-S
FE-H
FF/REW-L
FSC-IN
[4.43MHz]
FTV-IN
H-A-COMP
H-A-SW
Hi-Fi-A
Hi-Fi-COM
Hi-Fi-H-SW
HLF
IIC-BUS SCL
IIC-BUS SDA
JK1-8P-OUT
KEY-1
KEY-2
LD-SW
LINE-MUTE
LM-FWD/REV
LP
1-6-1
Function
Clock Select (GND)
Playback/Record Control Signal
(+)
Playback/Record Control Signal
(-)
To Monitor for CTL AMP Output
Drum Motor Control Signal
Drum Motor Pulse Generator
Delayed Record Signal
Dummy V-sync Output
LED Clock Driver IC Control
Clock
LED Clock Driver IC Control
Data
LED Clock Driver IC Chip Select
Signal
Tape End Position Detect Signal
Full Erase Head
CTL Frequency Characteristics
Switching Signal (FF/REW="L")
4.43MHz Clock Input
Comparator Input of Video
Signal for Follow TV
Head Amp Comparator Signal
Video Head Amp Switching
Pulse
Hi-Fi Audio Head
Hi-Fi Audio Head Common
Hi-Fi Audio Head Switching
Pulse
LPF Connected Terminal (Slicer)
2
I C BUS Control Clock
2
I C BUS Control Data
SCART 8Pin Output Control
Signal
Key Scan Input Signal 1
Key Scan Input Signal 2
Deck Mode Position Detector
Signal
Audio Mute Control Signal
Loading Motor Control Signal
LP
HG470SNA