Kenwood B-B5 Service Manual

B-B5/B7
CIRCUIT DESCRIPTION
PORT LAYOUT
Microprocessor yp PD78042GF-038(IC11 -X09)
FL
3
SEGMENT
LO7522 1~7,80 55~70 63~68
alee 2 | we [reo] <
EVA
jas furs |//
lore
[foal = fo a
PROTECTION
HEAD PHONE
STAND BY (LED)
uPD78042
FRONT MUTE
OMNI/REAR MUTE
HEAD PHONE MUTE
SUPER WOOFER
MUTE
RIAL BUSY
SERIAL DATA
REAR RELAY
j Destination area
ee yD Input identification
B-B5/B7
CIRCUIT DESCRIPTION
Pin Description
Name
Pin No. : Pin Name Description
1 P94 oO - GRID 6 _| FL driver output Grid 6
2; Pps | OO ~~ sSGRIDSS FL driver output Grid § i i
3. 2. Pg2. OO fo a fee _GRID4 _ FL driver output Grid 4 7 7
4 P91 0 ___GRID3 » FL driver output Grid 3 ke oe
Si PO OO GRID 2 FL driver output Grid 2 Zi
6 2 P8t EO GRID 1 __i Fk driver output Grid 1 -
eA P80 oO GRID 0 i FL driver output Grid 0 ~ |
8 sd ee - | +5V ~
9 P27, OO : CGE. IC (CLOCK) \ Gleico IC (LC7522) — CLK (Clock terminal)
10 | P26 ie) GE. IC (DATA) | Gleico IC (LC7522) — Di (Data terminal)
11. | P25 Si0/SBO | PROTECTION ' Protection detection
Saree H | Low: NON PROTECTION, High: PROTECTION
12 | P24 BUSY | po HEAD PHONE | Headphone input detection
_ a | ! ; Low: NON HEADPHONE High: HEADPHONE IN
13 | P23STB | O | KEYRETURN3 _| Key return 3
14 | Pe2Scki =; Oo | KEY RETURN 2 | Key return 2
15 | parsor | oO | KEY RETURN 1 | Key return 4
16 | P20 SH hoy, KEY RETURN 0 Key return 0
17__| RESET RESET | Microcomputer set terminal
18 | P74 | © | HEAD PHONE MUTE | Headphone mute
es al i _| Low: MUTE OFF High: MUTE ON
9 P73 | Oo | STAND BY LED | Standby LED ote
20 ! AVss | | | GND terminal
21 PIZANI7Z wt __NC | Unused
22, | P16 ANI6 | AD (16kHz) | Analog input 16kHz
23 | PPISANIS | | | AD (6.3kHz) Analog input 6.3kHz _ g
24 | PI4ANIG | | | AD (2.5kHz) | Analog input 2.5kHz
25 | PISANI3 | AD (1kHz) | Analog input 1kHz
26 | PIZANI2 I | AD (400Hz) Analog input 400Hz
27! PITANH | AD (160Hz) Analog input 160Hz aD
28 t P10 ANIO It ___ AD (63Hz) ; Analog input 63Hz _
29, | _sAVdd | +5V
30 _AVret as ; 1 +8V . _
_31_ | P04 XT1 bo When. Vss i GND
32 ee omens -
330 Vss | aoe | GND |
34! Mise See gees ere i Oscillator 4.19MHz__
35 | «x2 fw ae | Oscillator 4.19MHz
36 CO P37 | Oo | SW MUTE Super woofer mute
_ 4 . Low: S.W. OFF High: S.W. ON
37 | P36 BUZ / O POWER RELAY Power relay
| L 7 5 sLOW: POWER OFF High: POWER ON
38 P35 PCL l UD701/UD501 UD701/UDS501 destination area changeover
eee I | 7 Low: UDA501 High: UD701
39 P34 Tl2 ot HIT MASTER } HIT MASTER destinatioin area changeover
| i ; | Low: HIT MASTER OFF High: HIT MASTER ON
40 | P33 TI1 | OMN | OMNI destination area changeover
{ i Low: OMNI OFF, High: OMNI ON

Kenwood B-B5 Specifications

General

Brand	Kenwood
Model	B-B5
Category	Amplifier
Language	English