SERVICE MANUAL
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
No.49758
2002/09
KT-DB1000
DAB Tuner Unit
49758
2002
09
KT-DB1000
TABLE OF CONTENTS
Safety precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
KT-DB1000
2
SECTION 1
Safety precaution
CAUTION
Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in
the case of preforming repair of this system.
KT-DB1000
3
SECTION 2
Disassembly method
2.1 Main body
2.1.1 How to remove a top cover (See Figure 1 and 2.)
(1) Screw A attaches a top cover to the main body. Remove
the two screws A from the both sides of the main body.
(2) Raise the top cover in a direction that the arrow indicates.
And the top cover will be removed.
Fig.1
Fig.2
2.1.2 How to remove a main board (See Figure 3.)
(1) Remove the four screws B and the two screws C that at-
tach the main board to the main body.
(2) Raise the main board in a direction that the arrow indi-
cates. And the main board will be removed.
Fig.3
KT-DB1000
4
SECTION 3
Description of major ICs
3.1 MN102H60KCB (IC701) : Controller
· Pin layout
· Pin functions
No.
Symbol
I/O
Function
1
-
-
Not use
2
LCDRS
O
Resistor select output terminal for LCD module
3
LCDR/W
O
Read/Write select output terminal for LCD module
4
LCDE
O
Data read/write start up output for LCD module
5~12
LCDDB0~7
O
Data bus output 0 terminal for LCD module
13
JBUSCK
I/O
JBUS clock input/output terminal
14
JBUSDAI
I
JBUS data input terminal
15
JBUSDAO
O
JBUS data output terminal
16
JBUSI/O
O
JBUS input/output select output terminal
17
VDD
-
Powersupply terminal
18
SYSCKO
O
System clock(19.6608MHz) output terminal
19
GND
-
Connect to GND
20
XI
I
Connect to GND
21
NC
O
Open
22
VDD
-
Power supply trerminal
23
OSCI
I
X'tal connect terminal(19.6608MHz)
24
OSCO
O
X'tal connect terminal(19.6608MHz)
25
MODE
I
Mode setting input terminalpull up(single chip mode)
26
EEPRMDI
I
EEPROM(for preset data save)data input terminal
27
EEPRMDO
O
EEPROM(for preset data save)data output terminal
28
EEPRMCK
O
EEPROM(for preset data save)clock output terminal
29
EEPRMCS
O
EEPROM(for preset data save)chip select terminal
30~32
-
-
Not use
33
CKSEL
O
SYSCK output enable select terminal, "H" output enable
34
AVDD
-
Analogue power supply terminal
35
DAISEL
O
DAI output enable select terminal, "H" output enable
36
RDISEL
O
RDI output enable select terminal, "H" output enable
37
CIRSEL
I
CIR monitor output enable select terminal, "H" output enable
38
AGCSEL
I
AGC internal/external select terminal, "H" external(AGC outpput enable)
39
OPMODE0
I
Operation mode setting terminal 0
40
OPMODE1
I
Operation mode setting terminal 1
41
DUMMY
I
Dummy mode select terminal, "H" dummy mode
42
-
-
Not use
43
VREF-
-
Analogue reference power supply terminal, connect to GND
44
KEY0
I
Test key analogue voltage onput 0
45
KEY1
I
Test key analogue voltage input 1
46
KEY2
I
Test key analogue voltage input 2
47
KEY3
I
Test key analogue voltaeg input 3
48
TUSDA
O
Tuner PLL data output terminal
49
TUSCL
O
Tuner PLL clock output terminal
50
MPUCK
O
DAB MPU interface clock output terminal
51
MPUDAI
I
DAB MPU interface data input terminal
52
MPUDAO
O
DAB MPU interface data outut terminal
53
DABRST
O
DAB LSI/TUNER reset output terminal, "L" reset
54
VREF+
-
Analogue reference poser supply terminal, connect to AVDD
55
DABDARX
I
FIC packet data stream output data input terminal
KT-DB1000
5
56
DABDATX
O
FIC packet data stream outout data output terminal
57
MPUEN
O
DAB MPU interface chip enable output terminal
58
MPUMOD
O
DAB MPU interface mode signal outpout terminal
59
DZFINL
I
DZFL input terminal from DAC, "H" outout AMUTEL
60
DZFINR
I
DZFL input terminal from DAC, "H" outout AMUTER
61
AGND
-
Analogue GND terminal
62
AUDSEL
O
Audio signal select output terminal, "L" DAB "H" CD changer
63
AMUTEL
O
L-CH mute output terminal, "H" L-CH mute
64
AMUTER
O
R-CH mute output terminal, "H" R-CH mute
65
ANT+BIN
I
Antenna power supply voltage monitoer input terminal
66
VDD
-
Power supply
67
-
-
Not use
68
DACRST
O
DAC rest resr output terminal, "L" reset
69
-
-
Not use
70
SDCK
I
DAB serial data clock input terminal
71
SDDA
I
DAB serial data input terminal
72
SDWD
I
DAB sericl data window input terminal
73
SIFDA
I/O
On board serial write data input/output terminal pullup
74
SIFCK
I
On board serial write clock input terminal pullup
75
-
-
Not use
76
WFIC
I
Interrupt inout from DAB LSI, "L" triger detect
77
NIRQ
I
DDOWFIC input terminal from DABSEL
78
JBUSINT
I
JBUS interrupt input
79
PSAVE1
I
PSAVE1(power off)input interrupt triger detect at "L" level
80
PSAVE2
O
PSAVE2(STOP mode) input
81
POWOUT
O
Power on output terminal, "H" power on
82
RESET
I
Reset input terminal, "L" reset
83
VDD
-
POwer supply terminal
84
INDOUT0
O
Indicator output 0 for test
85
INDOUT1
O
Indicator output 1 for test
86
INDOUT2
O
Indicator output 2 for test
87
INDOUT3
O
Indicator output 3 for test
88
INDOUT4
O
Indicator output 4 for test
89
INDOUT5
O
Indicator output 5 for test
90
INDOUT6
O
Indicator output 6 for test
91
INDOUT7
O
Indicator output 7 for test
92
GND
-
GND terminal
93
DACCDTO
O
DAC chip select output
94
DACCCLK
O
DAC control clock output
95
DACCSN
O
DAC control data output
96~100
-
-
Not use
No.
Symbol
I/O
Function