JVC LT-20DA6SK, Service Manual

Page: 6 / 96

1-6 (No.YA354)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES
T-V LINK
When you have a T-V LINK compatible VCR connected to the
EXT-2 Terminal on the TV,it is easier to set up the VCR and to
view videos.
ZOOM
This function can change the screen size according to the
picture aspect ratio.
OFF TIMER
This function can set the TV to automatically turn off after a set
time.
COLOUR SYSTEM
If the picture is not clear or no colour appears, change the
current colour system to another colour system.
2.2 21-PIN EURO CONNECTOR (SCART) : EXT-1 / EXT-2
(P-P= Peak to Peak, B-W= Blanking to white peak)
Pin No. Signal designation Matching value EXT-1 EXT-2
1 AUDIO R output 500mV(rms) (Nominal),, Low impedance Used (TV OUT) Used (LINE OUT)
2 AUDIO R input 500mV(rms) (Nominal),, High impedance Used (R1) Used (R2)
3 AUDIO L output 500mV(rms) (Nominal),, Low impedance Used (TV OUT) Used (LINE OUT)
4 AUDIO GND Used Used
5 GND (B) Used Used
6 AUDIO L input 500mV(rms) (Nominal),, High impedance Used (L1) Used (L2)
7 B input 700mV
(B-W)
, 75
Ω
Used Used
8 FUNCTION SW
(SLOW SW)
Low : 0V-3V
High : 8V-12V, High impedance
Used Used
9 GND (G) Used Used
10 SCL / T-V LINK Not used Used
(SCL2 / TV-LINK)
11 G input 700mV
(B-W)
, 75
Ω
Used Used
12 SDA Not used Used (SDA2)
13 GND (R) Used Used
14 GND (YS) Used Not used
15 R / C input R : 700mV
(B-W)
, 75
Ω
C : 300mV
(P-P)
, 75
Ω
Used (R) Used (C2/R)
16 Ys input (FAST SW) Low : 0V-0.4V, High : 1V-3V, 75
Ω
Used Used
17 GND (VIDEO output) Used Used
18 GND (VIDEO input) Used Used
19 VIDEO output 1V
(P-P)
(Negative sync), 75
Ω
Used (TV OUT) Used (LINE OUT)
20 VIDEO / Y input 1V
(P-P)
(Negative sync), 75
Ω
Used Used
21 COMMON GND Used Used
20 18 16 14 12 10 8 6 4 2
21 19 17 15 13 11 9 7 5 3 1
[Pin assignment]