Specific Service Instructions - JVC AV-14RM4SE Service Manual

2.1 FEATURES
• It is a remote controlled color television.
• It can tune cable channels.
• Controlling the TV is very easy by its menu driven system.
• It has Euroconnector sockets for external device.
• Front AV Input available.
• Full function Teletext (TOP & WST).
• It is possible to connect headphone.
• Direct channel access.
2.2 MAIN DIFFERENCE LIST
Item
TV RF System
Colour System (TV mode)
MAIN PWB ASSY
2.3 21-PIN EURO CONNECTOR (SCRAT) : EXT-1
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 SDA3
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)
1-4 (No.YA081)
SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

AV-14RM4SE
B/G,D/K
PAL, SECAM
VE-20159378
Matching value
500mV(rms) (Nominal), Low impedance
500mV(rms) (Nominal), High impedance
500mV(rms) (Nominal), Low impedance
---
---
500mV(rms) (Nominal), High impedance
, 75 Ω
700mV
(B-W)
Low : 0V-3V
High : 8V-12V, High impedance
---
---
700mV(B-W), 75 Ω
---
---
---
, 75 Ω
R : 700mV
(B-W)
, 75 Ω
C : 300mV
(P-P)
Low : 0V-0.4V, 75 Ω
High : 1V-3V, 75 Ω
---
---
(Negative sync),75 Ω
1V
(P-P)
(Negative sync), 75 Ω
1V
(P-P)
---
[Pin assignment]
20 18 16 14
21 19 17 15 13 11
• APS (Automatic Programming System).
• All programs can be named.
• Forward or backward automatic tuning.
• Sleep timer.
• Child Lock.
• Automatic sound muting when no transmission.
• 5 minutes after the broadcasting (close down), the TV switches
itself automatically to stand-by mode.
AV-14RM4SN
B/G
PAL
VE-20159381
Used (TV OUT)
Used (R1)
Used (TV OUT)
Used
Used
Used (L1)
Used
Used
Used
Not used
Used
Not used
Used
Used
Used (R)
Used
Used
Used
Used (TV OUT)
Used
Used
12 10 8 6 4 2
9 7 5 3 1
AV-14RM4SP
B/G, L
PAL, SECAM
VE-20159384
EXT-1