JVC LT-26DF7BC, Service Manual

Page: 7 / 52

(No.YA487)1-7
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES
DVB-T (DIGITAL TERRESTRIAL BROADCASTING)
This TV can receive both Digital terrestrial broadcasting
(DVB-T) and Analogue terrestrial broadcasting.
HDMI (High Definition Multimedia Interface)
HDMI is the first industry supported, uncompressed,
all digital audio/video interface. By connecting an
HDMI compatible device, high definition pictures can
be displayed on your TV in their digital form.
3D COMB
3D Comb is used to improve colour transitions and colour quality
of pictures.
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 MAIN DIFFERENCE LIST
2.3 21-PIN EURO CONNECTOR (SCART) : EXT-1 / EXT-2
(P-P= Peak to Peak, B-W= Blanking to white peak)
Item LT-26DF7BC LT-26DF7BK
POWER CORD EU type(2-pin) UK type(3-pin)
REMOTE CONTROL UNIT VE-30044649(RM-C1897S) VE-30034033(RM-C1895)
DIGITAL TUNER PWB VE-30049956 VE-30049951
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 (TV-LINK)
11 G input 700mV
(B-W)
, 75
Ω
Used Used
12 SDA Not used Not used
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 (C/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 (V1) Used (Y/V2)
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]