Specific Service Instructions - JVC LT-23D50BK Service Manual

2.1 FEATURES
DVB-T (DIGITAL TERRESTRIAL BROADCASTING)
This TV can receive both Digital terrestrial broadcasting (DVB-
T) and Analogue terrestrial broadcasting.
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.
2.2 21-PIN EURO CONNECTOR (SCART) : EXT-1 / EXT-2
Pin No. Signal designation
1 AUDIO R output
2 AUDIO R input
3 AUDIO L output
4 AUDIO GND
5 GND (B)
6 AUDIO L input
7 B input
8 FUNCTION SW
(SLOW SW)
9 GND (G)
10 SCL / T-V LINK
11 G input
12 SDA
13 GND (R)
14 GND (YS)
15 R / C input
16 Ys input (FAST SW)
17 GND (VIDEO output)
18 GND (VIDEO input)
19 VIDEO output
20 VIDEO / Y input
21 COMMON GND
(P-P= Peak to Peak, B-W= Blanking to white peak)
[Pin assignment]
20 18 16 14
21 19 17 15
1-6 (No.YA221)
SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

Matching value
500mV(rms) (Nominal),, Low impedance
500mV(rms) (Nominal),, High impedance
500mV(rms) (Nominal),, Low impedance
500mV(rms) (Nominal),, High impedance
Ω
700mV , 75
(B-W)
Low : 0V-3V
High : 8V-12V, High impedance
Ω
700mV , 75
(B-W)
Ω
R : 700mV , 75
(B-W)
Ω
C : 300mV , 75
(P-P)
Low : 0V-0.4V, High : 1V-3V, 75
1V (Negative sync), 75
(P-P)
1V (Negative sync), 75
(P-P)
12 10 8 6 4 2
13 11 9 7 5 3 1
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.
Used (TV OUT)
Used (R1)
Used (TV OUT)
Used
Used
Used (L1)
Used
Used
Used
Not used
Used
Not used
Used
Used
Used (R)
Ω
Used
Used
Used
Ω
Used (TV OUT)
Ω
Used
Used
EXT-1 EXT-2
Used (LINE OUT)
Used (R2)
Used (LINE OUT)
Used
Used
Used (L2)
Used
Used
Used
Used
(SCL2 / TV-LINK)
Used
Used (SDA2)
Used
Not used
Used (C2/R)
Used
Used
Used
Used (LINE OUT)
Used
Used