Philips VR120 Service Manual page 111

Circuit descriptions and List of abbreviations
Signal
Composite sync pulse
CSYNC
CTL1 CTL-Synch-1
CTL2 CTL-Synch-2
Audio switching voltage AIN1/AFV
DEC
DECK_INIT Init switch
DRUM Head motor speed phase signal
Envelope comparator signal
ENVC
Feature frame pulse
FFP
Capstan tacho pulse digital
FGD
FM video playback
FMPV
Follow Me (video signals equal)
FOME
FSC Sub carrier frequency
Threading tacho
FTA
Threading tacho digital
FTAD
Green signal between scart1/2
GREEN
Ground
GND
GNDAF Ground on C650/651
GNDAIO Ground on C601
GNDAL Ground on C603
GNDAL1 Ground on C602
Ground digital
GNDD
Ground digital deck
GNDDE
GNDEO Ground on C601
Ground FM
GNDFMS
GNDFOME Ground FOME on C530
Ground FV-ZF
GNDFV
Ground key
GNDKEY
Ground led
GNDLED
Ground capstan motor
GNDM1
GNDS Ground for DE-CTL ampl.
Ground video IO
GNDVIO
GNDVPO Ground VPO on C500/501
GNDVS Ground VS on C602/603
GNDVARI Ground front cinch
Heater for displaytube high
HEHI
Heater for displaytube low
HELO
HP1 Head-Puls-1
HSC Head switch puls SP / LP
I1WSTBY Inverse < 1W switch
LED-tower supply
ILED
Inverse power on reset
IPOR
Erase oscillator on/off
IREV
IRR IR receiver pulse
Audio switching voltage AINF/AIN2
IS1
KEY_IN Key matrix voltage
KEY_LED Key led front shuttle
LH1 Longplay-Head-1
LH1' Longplay-Head-1'
LH2 Longplay-Head-2
LH2' Longplay-Head-2'
Blanking loop through scart 1/2
MON
MOT1 Scanner motor 1 phase
MOT2 Scanner motor 2 phase
MOT3 Scanner motor 3 phase
Description
PS AIO1
PS AIO1 AIO2
PS AIO1
PS
PS
PS
PS AIO1
VR120
Application
AIO1
DE AL
DE AL
AIO1
AIO1 DE
AIO1
AIO1
AIO1 DE
AIO1
DE
AIO1 DE
DE AF
AF
AF AL
AL
AL
AIO1 DE
AL
FM
FM FV
AIO2
DE
DE
AF AL
AIO2
AIO2
AIO1
AIO1
AIO1
AIO1 AIO2 DE
AIO1 AL
AIO1 AIO2
AIO1 AIO2
AIO1
DE
DE
DE
9. GB 111
VS
IO
VS
VS
VS
FOME
VS
IO
IO
IO
FOME
IO
FV VS VPO IO FOME
VPO
VS
IO
VS
VS
VS
IO
VS
VS
VS
VS
IO