Specific Service Instructions - JVC AV-14A16 Service Manual

2.1 FEATURES
PICTURE MODE
This function can adjust the picture settings automatically.
There are BRIGHT, STANDARD and SOFT in the PICTURE
MODE.
RETURN +
This function can set a channel you frequently view to the
Return Channel and you can view that channel at any time with
one-touch.
2.2 MAIN DIFFERENCE LIST
Item
Cabinet Design
Paint Colour
LED colour
TV RF System
OSD Language
Speaker
MAIN PWB
2.3 TECHNINAL INFORMATION
2.3.1 MAIN MI-COM (CPU) PIN FUNCTION
Pin
Pin name I/O
No.
1 REMOCON I Remote control
2 SDA2 I/O Data for Inter IC control (For main memory)
3 SCL2 O Clock for Inter IC contorl (For main memory)
4 BUS_FREE - Not used
5 NC - Not used
6 KEY1 I Key scan for front key (Menu CH -/+)
7 KEY2 I Key scan for front key (Vol -/+)
8 ECO IN - Not used
9 AFT I AFT voltage for tuner
10 LED[POW] - Not used
11 LED[TIM] O Liting for timer [Liting : H]
12 GND - GND
13 NC - Not used
14 NC - Not used
15 TV/V - Not used
16 TEXT RESET - Not used
17 ACL ON/OFF - Not used
18 VOL O Volume control
19 A_MUTE O Aodio muting [Muting : H]
20 NC - Not used
21 TEXT/OTH - Not used
1-4 (No.YA391)
SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

AV-14A16
A type cabinet
Silver
Green/Red
B/G, I, D/K
Eng, Chi, Malay, Ind
8cm Round type ×1
SCG-1552-H2
Function
CHILD LOCK
Use this function to prevent children from operating the TV
without parental consent.
VNR
This function can reduce the picture noise.
AV-14A16/A AV-14A16/L
←
←
←
←
←
←
SCG-1555-H2 SCG-1553-H2
Pin
Pin name I/O
No.
22 PROTECT I
23 P_ON/OFF I
24 LOCK -
25 3.58/OTH -
26 4.5/OTH -
27 H_SYNC I
28 I/II -
29 OSD_Ys O Ys (blanking) for OSD
30 OSD_B O Blue for OSD
31 OSD_G O Green for OSD
32 OSD_R O Red for OSD
33 NC -
34 RST I
35 V_SYNC I
36 TCLOCK -
37 SDA1 I/O Data for Inter IC control (For generally)
38 SCL1 O Clock for Inter IC contorl (For generally)
39 VDD I
40 OSC1 I
41 OSC2 O System clock oscillation (4MHz)
42 VSS -
AV-14FMG6B/G
←
F type cabinet
←
Black
←
Red/Orange
←
B/G, I, D/K, M
←
Eng, Ara, Per, Rus
← 5cm x 9cm Oval type ×2
SCG-1554-H2
Function
Low B protect detection [Detect: H]
Main power control [ON : H]
Not used
Not used
Not used
Horizontal sync
Not used
Not used
CPU reset [Reset:L]
Vertical sync
Not used
3.3V
System clock oscillation (4MHz)
GND