JVC AV-27BM3

HM MICRO PROCESSING CONTROL UNIT (iC701 : MN1872013JGK1)
A newly developed 1C701 (sensor control micro processor), which corresponds to the JVC MASTER COMMAND IV is employed in the
AV-27BM3 / CM3. Thanks to the 16701, channel selecting speed, mute function , SUB VOLUME (for TINT, COLOR, PICTURE and
BLIGHT) and AUTO DEMO function have been remarkably improved.
9IN / OUT put Port and System constant
AV-27BM3
AV-27CM3
PIN No. Port Name FUNCTION
4 ADINO AFC S curve
* ADINt SUB ADJ (Service mode GND)
6 ADIN2 LOCK (Tuner serial control)
7 P50 ‘System constant A
8 P51 System constant B
9 P82 ‘System constant G
10 P53 System constant D
W P54 CLOCK (Tuner serial control)
12 P55 DATA (Tuner serial control)
13 P56 ENABLE (Tuner serial control)
14 P57 Key seanning
7 DACO VOLUME control
18 DAC1 TINT control
19 DAC2 COLOR control
20 DAC3 PICTURE control
at DAC4 BRIGHT control
22 DACS DETAIL control
23 DACE BASS control
24 DAC? TREBLE control
25 DACB BALANCE controt
27 DACIO AUDIO MUTE (5V)
30 P46 TV MIDEO input switching
3t Pas MTS mode switching MONO / STEREO
32 P44 MTS mode switching MAIN / SAP.
33 Pag Key scanning
34 P42 Key scanning
95 Pat Key scanning
36 Pao Key scanning
a7 P17 (ACIN) 6OHz AC input (for timer)
38 P16 (SD) SYNC. detection
39 P15 (VOB) On-screen (background)
40 Pia (vows) On-sereen (B)
ay P13 (vowa2) On-sorsen (G)
42 P12 (VOW1) OUT On-screen (R)
43 P14 (TCIO) IN COMPULINK
45 P66 OUT AGC MUTE
47 Ped OUT POWER ON / OFF
49 P62 OUT Memory C3
50 P61 OUT Memory C2
51 P60 OUT. Memory C4
52 RST IN RESET
53 PO6, RMIN IN Remote control signal
54 H. SYNC IN H. sync. signal
55 Vv. SYNG IN V. syne. signal
56 Pa4, IROO iN Power suspension detection
58 P02 (/SBT1) iN COMPULINK detection
{No.50718) 5