Yamaha KMA-1000 User manual

KMA-1000/KMA-950
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already
known and understood by the users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,
we advise all YAMAHA product owners that any service required should be performed by an authorized YAMA-
HA Retailer or the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable
and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact
the distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have accumu-
lated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
IMPORTANT NOTICE
101140
SERVICE MANUAL
CONFIRMATION OF IDLING CURRENT OF AMP
UNIT ............................................................................ 14
IC DATA ................................................................ 15–16
BLOCK DIAGRAM..................................................... 17
PIN CONNECTION DIAGRAMS ................................ 18
PRINTED CIRCUIT BOARDS .............................. 19–36
SCHEMATIC DIAGRAMS ..................................... 37–50
REPLACEMENT PARTS LIST ............................. 51–63
REMOTE CONTROL .................................................. 64
SETUP MODE ...................................................... 65–67
CONTENTS
■
TO SERVICE PERSONNEL ......................................... 2
IMPEDANCE SELECTOR ............................................ 3
FRONT PANELS .......................................................... 3
REAR PANELS ............................................................. 4
REMOTE CONTROL PANEL ....................................... 5
SPECIFICATIONS .................................................... 5–6
INTERNAL VIEW .......................................................... 6
DISASSEMBLY PROCEDURES .................................. 7
INDICATION OF PROTECTION INFORMATION ........ 8
SELF-DIAGNOSTIC FUNCTION ............................ 9–13
Copyright © 2009 YAMAHA CORPORATION. All rights reserved.
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
’09.05
DIGITAL KARAOKE MIXING AMPLIFIER
KMA-1000/KMA-950
For T model

2
KMA-1000/KMA-950
KMA-1000/KMA-950
TO SERVICE PERSONNEL
■
1. Critical Components Information
Components having special characteristics are marked Z
and must be replaced with parts having specifications equal
to those originally installed.
2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated
from supply circuits.
●Meter impedance should be equivalent to 1500 ohms shunt-
ed by 0.15µF.
AC LEAKAGE
TESTER OR
EQUIVALENT
EQUIPMENT
UNDER TEST
INSULATING
TABLE
WALL
OUTLET
WARNING: CHEMICAL CONTENT NOTICE!
This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive
harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY
REASON WHAT SO EVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or ex-
pose eyes to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before
handling food.
●Leakage current must not exceed 0.5mA.
●Be sure to test for leakage with the AC plug in both
polarities.
About Lead Free Solder
All of the P.C.B.s installed in this unit and solder joints are soldered using the lead free solder.
Among some types of lead free solder currently available, it is recommended to use one of the following types for the repair work.
• Sn + Ag + Cu (tin + silver + copper)
• Sn + Cu (tin + copper)
• Sn + Zn + Bi (tin + zinc + bismuth)
Caution:
As the melting point temperature of the lead free solder is about 30°C to 40°C (50°F to 70°F) higher than that of the lead solder, be
sure to use a soldering iron suitable to each solder.
“CAUTION”
“F401: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE
2.5A, 250V FUSE.”
“F402: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE
4A, 250V FUSE.”
AV
WARNING: Lithium batteries
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.
WARNING: Lithium batteries are dangerous because
they can be exploded by improper handling. Observe the
following precautions when handling or replacing lithium
batteries.
• Leave lithium battery replacement to qualified service
personnel.
• Always replace with batteries of the same type.
• When installing on the PC board by soldering, solder
using the connection terminals provided on the battery
cells. Never solder directly to the cells. Perform the sol-
dering as quickly as possible.
• Never reverse the battery polarities when installing.
• Do not short the batteries.
• Do not attempt to recharge these batteries.
• Do not disassemble the batteries.
• Never heat batteries or throw them into fire.
ADVARSEL!
Lithiumbatteri –Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri af samme fabrikat
og type. Levér det brugte batteri tilbage til leverandøren.
VARNING
Explosionsfara vid felaktigt batteribyte. Använd samma
batterityp eller an ekvivalent typ som rekommenderas av
apparattillverkaren. Kassera använt batteri enligt fabrikan-
tens instruktion.
VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan
tyyppiin. Hävitä käytetty peristo valmistajan ohjeiden mu-
kaisesti.

3
KMA-1000/KMA-950
KMA-1000/KMA-950
IMPEDANCE SELECTOR
■
FRONT PANELS
■
▼KMA-1000
▼KMA-950
IMPEDANCE SELECTOR
WARNING:
Do not change the setting of the IMPEDANCE SELECTOR switch
when the unit power is switched on, as doing so may damage
the unit.
KMA-1000 model

4
KMA-1000/KMA-950
KMA-1000/KMA-950
REAR PANELS
■
▼KMA-1000 (T model)
▼KMA-950 (T model)

5
KMA-1000/KMA-950
KMA-1000/KMA-950
REMOTE CONTROL PANEL
■
SPECIFICATIONS
■
AMPLIFIER SECTION
Minimum RMS Output Power
L/R (1 kHz, 1% THD, 8-ohms)
KMA-1000 160 W + 160 W
KMA-950 120 W + 120 W
Maximum Useful Output Power (JEITA)
L/R (1 kHz, 10% THD, 8-ohms)
KMA-1000 200 W + 200 W
KMA-950 150 W + 150 W
Damping Factor
20 Hz to 20 kHz, 8-ohms 60 or more
Input Sensitivity/Input Impedance
DVD etc. 200 mV/42 k-ohms
Mic 6 mV/20 k-ohms
Maximum Input Voltage
DVD etc. 2.3 V or more
Mic 60 mV or more
Rated Output Voltage/Output Impedance
Subwoofer 2.0 V/1.2 k-ohms
Rec out 1.0 V/1.2 k-ohms
Total Harmonic Distortion (20 Hz to 20 kHz)
DVD etc. to SP OUT
KMA-1000 (80 W/8-ohms) 0.1% or less
KMA-950 (60 W/8-ohms) 0.1% or less
Signal to Noise Rate (IHF-A Network)
DVD etc., Input shorted (200 mV) 85 dB or more
MIC, Input shorted (6 mV) 75 dB or more
Residual Noise (IHF-A Network) 180 µV or less
Channel Separation (1 kHz)
DVD etc., Input 5.1 k-ohms shorted 55 dB or more
Tone Control Characteristics
MUSIC
Bass boost/cut (100 Hz) ± 12 dB
Treble boost/cut (10 kHz) ± 12 dB
MIC
Bass boost/cut (100 Hz) ± 12 dB
Mid boost/cut (1 kHz) ± 12 dB
Treble boost/cut (10 kHz) ± 10 dB
Gain Tracking Error 2.0 dB or less
GENERAL
Power Supply AC220 V, 50 Hz
Power Consumption
KMA-1000 200 W
KMA-950 145 W
AC Outlet
2 switched outlets 100 W max. total
Dimensions (W x H x D) 435 x 150 x 430 mm
(17-1/8" x 5-7/8" x 16-7/8")
Weight
KMA-1000 11.3 kg (24.9 lbs.)
KMA-950 10.7 kg (23.6 lbs.)
Finish Black color
Accessories Remote control x 1
Lithium battery (CR2025) x 1
* Specifications are subject to change without notice due to prod-
uct improvements.
T ............ Chinese model

6
KMA-1000/KMA-950
KMA-1000/KMA-950
435 (17-1/8˝)
18 (5/8˝)
132 (5-1/4˝)
150 (5-7/8˝)
376 (14-3/4˝) 430 (16-7/8˝)
40 (1-5/8˝)
14 (1/2˝)
DIMENSIONS
Unit : mm (inch)
INTERNAL VIEW
■
qMAIN (5) P.C.B.
wMAIN (3) P.C.B. (KMA-1000)
MAIN (4) P.C.B. (KMA-950)
eOPERATION (1) P.C.B.
rFUNCTION (3) P.C.B.
tMAIN (1) P.C.B.
yMAIN (2) P.C.B.
uFUNCTION (1) P.C.B.
iOPERATION (3) P.C.B.
oOPERATION (2) P.C.B.
!0 FUNCTION (2) P.C.B.
!1 OPERATION (5) P.C.B. (KMA-1000)
OPERATION (6) P.C.B. (KMA-950)
!2 OPERATION (4) P.C.B.
Front view
Top view /4 ) 0
16 2
*-   

7
KMA-1000/KMA-950
KMA-1000/KMA-950
DISASSEMBLY PROCEDURES
■
(Remove parts in the order as numbered.)
1. Removal of Top Cover
a. Remove 8 screws (q) and 2 screws (w). (Fig. 1)
b. Slide the top cover rearward to remove it. (Fig. 1)
2. Removal of Front Panel Unit
a. Remove 4 screws (e) and 4 screws (r). (Fig. 1)
b. Remove CB2, CB15 and CB562. (Fig. 1)
c. Remove the front panel unit. (Fig. 1)
Fig. 1
Fig. 2
3. Removal of OPERATION (1) P.C.B.
a. Remove 6 (KMA-1000) / 3 (KMA-950) screws (t)
and 2 nuts (y). (Fig. 2)
b. Remove CB237. (Fig. 2)
c. Remove the OPERATION (1) P.C.B.. (Fig. 2)
Top cover
:
:@
CB2
CB15
CB562
;
;
.
Front panel unit
==
==
=BB
CB237 OPERATION (1) P.C.B.
KMA-1000 model

8
KMA-1000/KMA-950
KMA-1000/KMA-950
INDICATION OF PROTECTION INFORMATION
■
If any of indicators shown below flashes after turning on the power to this unit, it means that the protection func-
tion is at work and normal operation is not available.
●
Details of Protection Information
a. DC protection
Cause: Abnormal DC voltage of amplifier output L/R
Normal value: 0.312 to 2.327 V
Detection port: PRD (58 pin of microprocessor IC15)
Detected at: Amplifier output L/Rch of MAIN P.C.B.
b. I protection
Cause: Excess current flow into amplifier
Normal value: Low (0 V)
Detection port:
PRI (56 pin of microprocessor IC15)
Detected at: Amplifier output L/Rch of MAIN P.C.B.
c. TH protection
Cause: Abnormal temperature of heat sink.
Normal value: 0.3 to 1.4 V
Detection port: TH_R (57 pin of microprocessor IC15)
Detected at: Heat sink temperature detection IC401 of MAIN P.C.B.
MUSIC indicator flashing: DC protection MIC indicator flashing: TH protection
ECHO indicator flashing: I protection
KEY CONTROL indicator flashing in red/green alternately

9
KMA-1000/KMA-950
KMA-1000/KMA-950
This unit has self-diagnostic functions that are intended for inspection, measurement and location of faulty point.
There are 10 main menu items, each of which has sub-menu items.
Listed in the table below are main menu items and sub-menu items.
SELF-DIAGNOSTIC FUNCTION
■
 No. Main menu Sub-menu
1 FIRMWARE VERSION a Firmware Version #1
b Firmware Version #2
2 TEMPERATURE of HEAT SINK
a Monitor
b Maximum
c Minimum
3 TEMPERATURE of POWER TRANSFORMER
a Monitor
b Maximum
c Minimum
4 DC VOLTAGE a DC Voltage
5 PROTECTION HISTORY
a History 1
b History 2
c History 3
6 CHECKSUM a Upper bit
b Lower bit
7 ANALOG CHECK
a DVD
b AUX (KMA-1000) / TAPE (KMA-950)
c TAPE (KMA-1000) / BGM (KMA-950)
d BGM (KMA-1000) / ‒ (KMA-950)
8 KP MUSIC CHECK
a DVD
b AUX (KMA-1000) / TAPE (KMA-950)
c TAPE (KMA-1000) / BGM (KMA-950)
d BGM (KMA-1000) / ‒ (KMA-950)
9 KP MIC CHECK aLch
bRch
10 INDICATOR CHECK
a All Light up
b All Off
c Automatic Sequential Lighting
11 INPUT MODE
a DVD
b AUX (KMA-1000) / TAPE (KMA-950)
c TAPE (KMA-1000) / BGM (KMA-950)
d BGM (KMA-1000) / ‒ (KMA-950)
12 KP DELAY CHECK
a DVD
b AUX (KMA-1000) / TAPE (KMA-950)
c TAPE (KMA-1000) / BGM (KMA-950)
d BGM (KMA-1000) / ‒ (KMA-950)

10
KMA-1000/KMA-950
KMA-1000/KMA-950
●Starting Self-Diagnostic Function
While pressing theINPUT key of this unit, press thePOWER switch to turn ON the power.
“INPUT” key
“POWER” switch
●Canceling Self-Diagnostic Function
Press thePOWER switch of this unit to turn OFF the power.
●Operation Procedure of Main menu and Sub-menu
There are 12 main menu items, each of them having sub-menu items.
Main menu selection
Select the main menu usingKEY CONTROL knob.
Sub-menu selection
Select the sub-menu usingINPUT key.
Mainmenuindicator(litinred) Sub-menuindicator
Main menu No. KEY CONTROL indicators
1
2+1
3+2
4+3
5+4
6+5
7-1
8-2
9-3
10 - 4
11 - 5
12 - 5, - 4
Sub-menu Code INPUT indicators
KMA-1000 KMA-950
a DVD DVD
b AUX TAPE
c TAPE BGM
d BGM ‒

11
KMA-1000/KMA-950
KMA-1000/KMA-950
●
Details of Self-Diagnostic Function menu
1. FIRMWARE VERSION
The firmware version is indicated.
a. Firmware Version #1: Firmware free area
b. Firmware Version #2: Firmware fixed area
2. TEMPERATURE of HEAT SINK
The temperature of heat sink is indicated.
a. Monitor: Current temperature
b. Maximum: Highest value
c. Minimum: Lowest value
4. DC VOLTAGE
The DC voltage of amplifier output L/R is indicated.
5. PROTECTION HISTORY
The 3 protection histories are indicated.
0. No protection
1. DC protection
2. I protection
3. TH protection
Version: 1.00
+026 ℃
Voltage: 0.00V
History 1 (Latest) History 2 History 3
(+: Off, -: Lit (Amber))
+026 ℃
(+: Off, -: Lit (Amber))
3. TEMPERATURE of POWER TRANSFORMER
The temperature of power transformer is indicated.
a. Monitor: Current temperature
b. Maximum: Highest value
c. Minimum: Lowest value

12
KMA-1000/KMA-950
KMA-1000/KMA-950
6. CHECKSUM
The checksum value is indicated in the decimal number.
a. Upper bit
b. Lower bit
Music
Vocal
A/D
A/D
Gm_L
Gm_R
Gv
D/A
D/A
ANALOG CHECK through
ANALOG CHECK through
SW
Through
KP
VR
Music
VR
Mic
KP
KEY
CONTROL
Volume INPUT Gm_L Gm_R Gv SW
MUSIC ECHO MIC
ANALOG CHECK Active
(Min) Min Active (Min)
Active
(DVD) – ∞– ∞– ∞through
KP MUSIC CHECK – ∞0 dB Active
(Min)
Active
(DVD) – ∞– ∞0 dB off
KP MIC CHECK L ch Active
(Min) Min – ∞off 0 dB – ∞– ∞KP
KP MIC CHECK R ch Active
(Min) Min – ∞off – ∞0 dB – ∞KP
Fig. 3
INPUT select L ch: 0 to 4, R ch: 6 to 10
“ECHO MODE” key
Upperbit 054 (decimal number) m39 (Hexadecimal)
Lowerbit 169 (decimal number) m86 (Hexadecimal)
Checksum value: 3986
7. ANALOG CHECK
The signal passage is checked. (Fig. 3)
INPUT select: DVD, AUX (KMA-1000 model), TAPE, BGM
MUTE ON/OFF: "ECHO MODE" key (ON: Lit (amber), OFF: Off)
8. KP (Karaoke processor) MUSIC CHECK
The signal passage is checked. (Fig. 3)
INPUT select: DVD, AUX (KMA-1000 model), TAPE, BGM
9. KP (Karaoke processor) MIC CHECK
The signal passage is checked. (Fig. 3)
Channel select: "ECHO MODE" key
a. L ch (0 to 4 of MIC indicator light up)
b. R ch (6 to 10 of MIC indicator light up)

13
KMA-1000/KMA-950
KMA-1000/KMA-950
10. INDICATOR CHECK
This menu is used to check the indicators.
a. All Light up
b. All Off
c. Automatic Sequential Lighting
11. INPUT MODE
Both Auto and Manual of INPUT mode are activated.
12. KP (Karaoke processor) DELAY CHECK
The delay time is checked. (Fig. 3)
INPUT select: DVD, AUX (KMA-1000 model), TAPE, BGM
DELAY time: "ECHO MODE" key (560µs: Lit (amber), 622ms: Off)

14
KMA-1000/KMA-950
KMA-1000/KMA-950
CONFIRMATION OF IDLING CURRENT OF AMP UNIT
■
R429 (L ch)
R430(R ch)
TP413–TP415 (L ch)
TP414–TP416 (R ch)
Open (cut off)
20 mV – 350mV
(DC)
R429
R430
TP416
TP414
TP415
TP413
Rear side
Front side
Item Condition Test point Raiting Remark
Idling current
No input signal
Wait for 2–3 minutes
TP413–TP415 (L ch)
DC 20–350mV
If measured voltage exceeds 350 mV,
open (cut off) R429(L ch), R430 (R ch)
and reconfirm the voltage.
TP414–TP416 (R ch)

15
KMA-1000/KMA-950
Pin No. Port Name Function Name I/O Detail of Function Default
1 P33/SSI SDATA O For device, commonly used DATA Low
2 P34/SDA/SCS FSTL O LED/key PT6313 / NJM7318 STB High
3 MODE MODE
4 P43/XCIN SSDATA O LED/key PT6313 / NJM7318 DATA Low
5 P44/XCOUT SSCLK O LED/key PT6313 / NJM7318 SCK Low
6 RESET /RESET
7 P47/XOUT XOUT
8 VSS/AVSS VSS/AVSS
9 P46/XIN XIN
10 VCC/AVCC VCC/AVCC
11 P54/TRCIOD MUTEPRE O MUTE control Low
12 P53/TRCIOC MUTEREC O MUTE control Low
13 P52/TRCIOB MUTEPAMP O MUTE control Low
14 P51/TRCIOA/TRCTRG /VLICN O Inerface for electronic volume YSS520 ICN Low
15 P50/TRCCLK /VLCS1 O Inerface for electronic volume YSS520 CS High
16 P27/TRDIOD1 MODEL I Model detection x
17 P26/TRDIOC1 SELST O Audio analog switch NJM7313 ST Low
18 P25/TRDIOB1 /MS O Interface for DAC DAC /MS High
19 P24/TRDIOA1 RCK O Video analog switch TC74VHC595 RCK Low
20 P23/TRDIOD0 KPIC O Interface for KP IC Low
21 P22/TRDIOC0 EVOLDATA O Interface for electronic volume YSS520 DATA Low
22 P21/TRDIOB0 VIDEODET I For video input detection x
23 P20/TRDIOA0/TRDCLK PreS O MUSIC pre-output select TC74VHC595 /G Low
24 P17/TRAIO/INT1 /KPCS O Interface for KP /CS High
25 P16/CLK0 EVOLCLK O Interface for electronic volume YSS520 CLK Low
26 P15/RXD0/(TRAIO)/(INT1) RXDPC I PC interface (RX) RX x
27 P14/TXD0 TXDPC O PC interface (TX) TX x
28 P86 MUSRA I Rotary encoder input for MUSIC volume EC12E2460814 A signal x
29 P85/TRFO12 MUSRB I Rotary encoder input for MUSIC volume B signal x
30 P84/TRFO11 MICRA I Rotary encoder input for MIC volume EC12E2460814 A signal x
31 P83/TRFO10/TRFI MICRB I Rotary encoder input for MIC volume B signal x
32 P82/TRFO02 ECHORA I Rotary encoder input for ECHO volume EC12E2460814 A signal x
33 P81/TRFO01 ECHORB I Rotary encoder input for ECHO volume B signal x
34 P80/TRFO00 KEYRA I Rotary encoder input for KEY CONTROL volume EC12E2460814 A signal x
35 P60/TREO KEYRB I Rotary encoder input for KEY CONTROL volume B signal x
36 P45/INT0 REM I For front remote controller reception High
37 P66/INT2/TXD1 TXDWR O ICE, for FLASH writing x
38 P67/INT3/RXD1 RXDWR I ICE, for FLASH writing x
39 P65/(CLK1)/CLK2 PAS O MIC power amplifier output select Low
40 P64/RXD2 ASWDATA O Audio analog switch NJM7313 DATA Low
41 P63/TXD2 ASWCLK O Audio analog switch NJM7313 CLK Low
42 P31/TRBO /EROMCS O EEPROM CS High
43 P30/TRAO EROMDIN I EEPROM DATA x
44 P36/(INT1) RMIN I Panel bak expansion remote controller x
45 P32/(INT2) RMDIR I ?
46 P13/Kl3/AN11 TAPEIN I Low
47 P12/Kl2/AN10 AUXIN I Low
48 P11/Kl1/AN9 DVDIN I Low
49 P10/Kl0/AN8 VOLREPEAT I AD volume Repeat x
50 P00/AN7 PDET I Input for power detect ?
51 P01/AN6 VOLDELAY I AD volume Delay x
52 P02/AN5 SPA O Speaker relay control Low
53 P03/AN4 VOLBAL I AD volume Balance x
54 P04/AN3 THR2 I For thermal measurement ?
55 P62 DIAGAD O Volume maximum detection at self-diagnostic function mode Low
56 P61 PRI I Excess current detection Low
57 P05/AN2/CLK1 THR I For thermal measurement ?
58 P06/AN1/DA0 PRD I Power amplifier DC detection ?
59 VSS/AVSS VSS/AVSS
60 P07/AN0/DA1 DIAG O Self-diagnostic function mode detection Low
61 VREF VREF
62 VCC/AVCC VCC/AVCC
63 P37/SSO SDOUT I Key input Low
64 P35/SCL/SSCK SCK O For device, commonly used SCK Low
IC DATA
■
Timer RA (8-bit)
Timer RB (8-bit)
Timer RC (16-bit)
Timer RE (8-bit)
Timer RF (16-bit)
Timer RD (16-bit x 2-channel)
Timer
Internal peripheral functions
I/O port
Watchdog timer
(15-bit)
A/D converter
LIN module
(10-bit X 12-channel )
D/A converter
(8-bit X 2-channel )
(1-channel
)
UART or
clock synchronous serial I/O
(8-bit X 3-channel)
(8-bit
X 1-channel)
System clock generator
12C BUS interface
or clock synchronous type
serial I/O with chip select function
X IN -X OUT
X CIN -X COUT
High speed On-Chip Oscillator
Low speed On-Chip Oscillator
R8C/Tiny series
microprocessor core
Port P4
32
Port P5
5
Port P6
8
Port P8
7
Memory
ROM
(Note 1)
RAM
(Note 2)
Note 1: ROM size depends on microprocessor type.
Note 2: RAM size depends on microprocessor type.
Multiplier
8
Port P0
8
Port P1
8
Port P2
8
Port P3
R0LR0H
R1H R1L
R2
R3
SB
FLG
USP
ISP
INTB
PC
A0
A1
FB
1 2
3
4
5 6
7 8 9
10 11 12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
45
46
47
48
44
43
42 41
40
39 38 37 36 35 34 33
60
59
58
63
64
62
61
57
56
55
54
53
52
51
50
49
Note 1 P4_7/XOUT is a port exclusively for input
Note 2 Arrangement to the terminal in parentheses ( ) is available by programming.
(*2)
P3_4/SDA/SCS
P4_3/XCIN
P4_4/XCOUT
P5_4/TRCIOD
P5_3/TRCIOC
P5_2/TRCIOB
P5_1/TRCIOA/TRCTRG
P5_0/TRCCLK
P2_7/TRDIOD1
P2_6/TRDIOC1
P3_5/SCL/SSCK
P3_7/SSO
VCC/AVCC
VREF
P0_7/AN0/DA1
P0_5/AN2/CLK1
P6_1
P6_2
P0_4/AN3
P0_3/AN4
P0_2/AN5
P0_1/AN6
P0_0/AN7
P1_0/KI0/AN8
VSS/AVSS
P0_6/AN1/DA0
P2_5/TRDIOB1
P2_4/TRDIOA1
P2_3/TRDIOD0
P2_2/TRDIOC0
P2_1/TRDIOB0
P1_7/TRAIO/INT1
P1_6/CLK0
P1_4/TXD0
P8_6
P8_5/TRFO12
P8_4/TRFO11
P8_3/TRFO10/TRFI
P8_2/TRFO02
P2_0/TRDIOA0/TRDCLK
P1_5/RXD0/(TRAIO)/(INT1)
RESET
P4_7/XOUT(*1)
VSS/AVSS
VCC/AVCC
P4_6/XIN
MODE
P3_3/SSI
P6_4/RXD2
P6_5/(CLK1)/CLK2(*2)
P6_7/INT3/RXD1
P6_6/INT2/TXD1
P4_5/INT0
P6_0/TREO
P8_0/TRFO00
P8_1/TRFO01
P3_1/TRBO
P6_3/TXD2
P3_6/(INT1)(*2)
P3_0/TRAO
P1_3/KI3/AN11
P3_2/(INT2)(*2)
P1_1/KI1/AN9
P1_2/KI2/AN10
IC15 : R5F212A8SNFA (FUNCTION P.C.B.)
Microprocessor

16
KMA-1000/KMA-950
Pin no. Function name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
-
I
I+
I+
I+
I+
-
A
-
A-
AI
A-
A-
AI
A-
AI
A-
A-
A-
AO
AO
A-
-
O
O
O
O
O
O
O
O
O
-
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
-
O
-
I
I+
I/O
I/O
(NC)
MD2
MD7
MD6
MD5
MD4
MD3
CD1
/CS
YDD
/SCK
DI
SDSY
BCI
/ANLS
VSS
(NC)
AYSS
CVB
MIC
CHM
CHR
AIR
AVDD
AIL
AVDD
CHL
CVA
AOL
AOR
AVSS
VSS
BCO
L/R
DO
MA13
MA8
MA9
MA11
MA10
MA14
VDD
MA12
MA7
MA6
MA5
MA4
MA3
MA2
MA1
MA0
/CE0
/CE1
/OE
/WE
XO
XI
VDD
MCKO
VSS
/IC
384/256
MD0
MD1
(Not connected)
External suspected SRAM interface data terminal
External suspected SRAM interface data terminal
External suspected SRAM interface data terminal
External suspected SRAM interface data terminal
External suspected SRAM interface data terminal
External suspected SRAM interface data terminal
Microprocessor interface serial data
Microprocessor interface chip selector
+5V supply (digital)
Microprocessor interface serial lock
Digital audio input - serial data
Digital audio input - L/R clock
Digital audio input - bit clock
YM7110 interface - serial data
GND (digital)
(Not connected)
"GND (A/D, D/A system to connect VSS at out side)"
"R channel, ADC center voltage of the MIC channel"
Inputs ADC of the analog audio MIC channel
MIC inputting sample/holding condenser connector terminal
AIR inputting sample/holding condenser connector terminal
Inputs ADC of the analog audio R channel
"+5V supply (A/D, D/A system to connect VDD at out side)"
Inputs ADC of the analog audio L channel
"+5V supply (A/D, D/A system to connect VDD at out side)"
AIL inputting sample/holding condenser connector terminal
L channel of ADC center voltage
Outputs DAC of the analog audio L channel
Outputs DAV of the analog audio L channel
"GND (A/D, D/A system to connect VDD at out side)"
GND (digital)
Digital audio output - bit clock
Digital audio output - L/R clock
Digital audio output - serial data
External suspected SRAM interface address terminal
External suspected SRAM interface address terminal
External suspected SRAM interface address terminal
External suspected SRAM interface address terminal
External suspected SRAM interface address terminal
External suspected SRAM interface address terminal
GND (digital)
External suspected SRAM interface address terminal
External suspected SRAM interface address terminal
External suspected SRAM interface address terminal
External suspected SRAM interface address terminal
External suspected SRAM interface address terminal
External suspected SRAM interface address terminal
External suspected SRAM interface address terminal
External suspected SRAM interface address terminal
External suspected SRAM interface address terminal
External suspected SRAM interface Chip selector = 0
External suspected SRAM interface Chip selector = 1 (Available when two item are connected)
External suspected SRAM interface OE terminal
External suspected SRAM interface WE terminal
Crystal oscillator connected terminal
Crystal oscillator connected terminal or External clock input terminal
+5V supply (digital)
Outputs the master clock (XI clock)
GND (digital)
Initial clear terminal
Switches the master clock rate ('H' = 384fs, 'L' = 256fs)
External suspected SRAM interface data terminal
External suspected SRAM interface data terminal
Detail of function
Note) +: Pull-up terminal,
A: Analog terminal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
(NC)
MD2
MD7
MD6
MD5
MD4
MD3
CDI
/CS
VDD
/SCK
DI
SDSY
BCI
/ANLS
VSS
(NC)
AVSS
CVB
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA12
VDD
MA14
MA10
MA11
MA9
MA8
MA13
DO
L/R
BCO
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
64 63 62 61 60 59 58 57 56 55 54 53 52
20 21 22 23 24 25 26 27 28 29 30 31 32
MIC
CHM
CHR
AIR
AVDD
AIL
AVDD
CHL
CVA
AOL
AOR
AVSS
VSS
MD1 MD0 384/256 /IC VSS MCKO VDD XI XO /WE /OE /CE1 /CD0
YSS205
BCI.SDSY.DI RD
LD
RA
LA
MIC
RD
LD
DA
LA
/IC
/CS
/SCK
CDI
BCO
L/R
DO
AOL
AOR
/ANLS
CVA
AIL
CNL
AIR
CHR
MIC
CHM
CUB
A/D D/A
DSP
MPX
Microprocessor
interface
A/D
SEL
DMPX
Suspected SRAM
interface
Clock
oscillate
IC602 : YSS205B (FUNCTION P.C.B.)
Karaoke processor

A B C D E F G H
1
2
3
4
5
6
17
KMA-1000/KMA-950
BLOCK DIAGRAM
■
KMA-1000 model:
OPERATION
s3EEPAGE+-!
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OPERATION
MAIN
FUNCTION
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"!,!.#%$-)#).0542EARPANEL
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KMA-1000 KMA-950

18
KMA-1000/KMA-950
PIN CONNECTION DIAGRAMS
■
B
E
C
2
11: GND
2: IN
3: OUT
3
C
E
B
CB
BCEECB
B
E
C
E
3: Base
2: Collector
1: Emitter
123
123
1: GND/Emitter
2: OUT/Collector
3: IN/Base
ECB
BCE
STD04P
12345
STD04N
12345
1
4
3
5
1
5
2
3
2N5401C-AT 2N5551C-AT 2SC1815-Y
2SA970-GR
2SA1037K 2SC2412K
2SA1015-Y
2SD1938F
2SB1237 KRA102M-AT2SA1689 E,F
2SC4449 E,F
DTC114ESA-TP DTC114EKA
2SA1837/2SC4793
2SC4081 T106
STD04P/STD04N
ECB
Anode
Cathode
Anode
Cathode
Anode
Cathode
Anode
Cathode
+
–
ACAC
Anode
Cathode
+
ACAC
–
+ACAC
–
1: ANODE1
2: CATHODE2
3: ANODE2,
2
3
1
CATHODE1
2
1
3
1SS226 (TE85R) MA8047-M 4.7V1SR139
ISR140
1SS133
1SS176
1SS270A
1T2
EL02ZLF
S2L20U
RS203M RS403MMTZJ12B
MTZJ12C
MTZJ5.1C
MTZJ5.6B
D15XBN20RLZ4.7A 4.7V
RLZ5.1B 5.1V
1SS355
14 7
1
16
8
1
116
17
32
3348
49
64
84
1
OUT
GND
IN
+VS
GND
VOUT 1
2
31: IN
2: GND
3: OUT
1: INPUT
2: GND
3: OUTPUT
3
2
1
30
15
1
32 16
1
17
28
14
11
10
20
16
8
1
14
7
1
32
20
19
1
33
51
52
64 1
4
8
M95010-WMN6TP
NJU3718AM NJU7313AM
R5F212A8SNFA
YAC520-EE2
KIA7912PI
TC74HCU04AFEL
NJM2267M
UPC4570G2-E1-A
LM61CIZ
M5M51008DFP-55H
BA7649AFPCM1780DBQR
YSS205B-F
TC74HC4053AFT
TC74HC595AF
NJM7812FA
NJM7805FA NJM78M05DL1A
ICs Transistors
Diodes

A B C D E F G H
1
2
3
4
5
6
19
KMA-1000/KMA-950
CB304
W303
W302
IC300
IC301
IC303
IC307
IC305
DGND VOL_REPEAT VOL_BAL -12VA AG +12VA AG AG AG AG AG AG GND_RM
+5VD
VOL_DELAY
MIC2_OUT MIC1_OUT
MUS_ROUT
MUS_LOUT
MUSIC_RIN
MUSIC_LIN
MIC_ECHO_R
MIC_ECHO_L
MIC_MIX_A
RM2 RM1
FUNCTION (1) (CB2)
MUSIC
BALANCE MUSIC TONE
BASS TREBLE
MIC ECHO
DELAY REPEAT
MIC TONE
BASS MID TREBLE
MIC VOL
MIC 1 MIC 2 MIC 3
14
58
14
58
14
58
1
4
58
14
58
FUNCTION (1) (CB3)
OPERATION (4) (CB901)
AG
MIC1
AG_
AG
MIC2
AG
MIC3
PRINTED CIRCUIT BOARDS
■
FUNCTION (2) (Side A)
FUNCTION (2) (Side B)
KMA-1000
Ref. No. Location
IC300 F2
IC301 F2
IC303 D2
IC305 B2
IC307 C2
●Semiconductor Location

A B C D E F G H
1
2
3
4
5
6
20
KMA-1000/KMA-950
FUNCTION (1) (Side A)
Ref. No. Location
D8 D5
D12 D5
D15 F4
D16 G4
D17 E4
D18 E4
D801 D5
D802 D5
D803 D4
D804 D4
D805 F5
D806 F5
D807 C3
IC1 C5
IC2 C4
IC3 C2
IC4 C4
IC5 D5
IC6 D5
IC7 D5
IC8 E4
IC9E4
IC10 D4
IC11 D4
IC14 C2
IC15 F5
IC16 G4
IC17 E4
IC18 D4
IC616 C2
IC617 C3
IC618 C1
Q3 C4
Q4 C3
Q5 C4
Q6 C3
Q10 C1
Q12 C3
Q13 C3
Q14 C2
Q15 C2
Q16 C2
Q17 C2
Q18 C2
Q19C2
Q21 C3
Q22 C3
Q30 C1
Q31 C1
●Semiconductor Location
Point qPin 7 of IC15
CB12
CB19
CB22
CB17
W2
CB2
CB15
IC15
IC16
IC8 IC9
IC10
IC17
IC18
IC7
IC6
IC5
IC11
CB21
CB3
W3
IC1
IC4
IC2
IC3
IC14
W1
CB4
IC618
IC616
IC617
PRE OUT
(L/R)
SUB WOOFER
1/2 (WITH LPF)
BGM
(INPUT LEVEL)
BGM
(INPUT L/R)
TAPE OUT
(L/R)
TAPE IN
(L/R)
TAPE
(INPUT LEVEL)
AUX
(INPUT LEVEL)
AUX IN
(L/R)
DVD IN
(L/R)
DVD
(INPUT LEVEL)
GND_5V
+5VA
DGND
+5VD
SCLK
SD ATA
/KP_CS
KP_IC
/MS
FUNCTION (3) (CB601)
FUNCTION (3) (CB602)
MIC_MIX_A AG KEYCON_R_IN AG KEYCON_L_IN AG KEYCON_L_OUT +12VA KEYCON_R_OUT AG MIC_ECHO_R -12VA MIC_ECHO_L
+5VD
VOL_DELAY
MIC2_OUT
MIC1_OUT
MUS_ROUT
MUS_LOUT
KEYCON_R_OUT
KEYCON_L_OUT
MIC_ECHO_R
MIC_ECHO_L
MIC_MIX_A
RM2
RM1
DGND
VOL_REPEAT
VOL_BAL
-12VA
AG
+12VA
AG
AG
AG
AG
AG
GND_RM
GND_RM
FUNCTION (2) (CB304)
RM_IN
TXD_PC
/G_V
RCK
+5VD
-12VA
RM2
RM1
DGND
RM_DIR
VIDEO_DET
SD ATA
SCLK
+5VA
GND_RM
+12VA
OPERATION (1) (CB237)
ECHO_RA MIC_RA MUS_RA KEYC_B REM KEY_IN SSCLK GND +8D
ECHO_RB
MIC_RB
MUS_RB
DGND
KEYC_A
FSTL
SSDATA
+5D
GND
+8D
OPERATION (2) (CB706)
DGND 5VD TH_R2 TH_R PDET /RESET SPA PRD PRI
MAIN (1) (CB402) MAIN (2) (W552)
+12V GND_5V -12V +5VA DGND +5VD +8D_GND +8D
R
GND
L
MAIN (1) (CB401)
FUNCTION (2) (W302)
1
14
58
1
16
17
32
33
48
49 64
1
14
5
8
1
1
4
4
5
8
58
14
58
1
115
16
30 4
58
14
58
10 11
20
1
10 11
20
14
58
14
58
14
58
14
5
8
14
5
8
(Writing port)
18
916
18
916
KMA-1000