Kenwood MRH-1 Service manual
ENTERTAINMENT HUB
MR-H1
SERVICE MANUAL
© 2002-01 PRINTED IN KOREA
B51-5781-00 (K/K)
Case
(A01-3845-08)
AC power cord
(E30-7243-08)
Panel
(A60-2187-08)
Optical in
(W02-2903-08)
Coaxial jack
(E63-1235-08)
Front glass
(B10-3804-08)
Phono jack
(E63-1236-08)
Optical out
(W02-2902-08)
Phono jack
(E63-1238-08)x2
S-video jack
(E63-1237-08)x2
Phono jack
(E63-1239-08)
Sub panel
(A22-1870-08)
RC-232C jack
(E58-0048-08)
Phone jack
(E11-0950-08)
USB, rear jack
(E58-0047-08)
Telephone jack
(E58-0049-08)
In compliance with Federal Regulations, following are reproduction of labels on, or inside the product relating to laser
product safety.
Caution : No connection of ground line if disassemble
the unit. Please connect the ground line on
rear panel, PCBs, Chassis and some others.
KENWOOD-Corp. certifies this equipment conforms to DHHS
Regulations No.21 CFR 1040. 10, Chapter 1, subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
1 mono mini jack cable
(E30-7248-08)
1 RS232C cable
(E30-7247-08)
1 telephone cable
(E30-7244-08)
1 S-Video cable
(E30-7246-08)
2 digital optical cables
(B19-1635-08)
batteries
2 stereo audio cables
(E30-7245-08)
Remote control
(A70-1562-08)
MR-H1
CONTENTS / ACCESSORIES
Contents
CONTENTS / ACCESSORIES .................................. 2
SCHEMATIC DIAGRAM ............................................ 3
EXPLODED VIEW ......................................................5
Note: This manual has only simple schematic diagram, exploded view and parts list. Schematic is available for
repairing parts, front usb, both sides button boards. Parts list and exploded view is available for our stock parts.
Please contact KENWOOD SERVICE if you want to get a technical information on this model.
PARTS LIST................................................................7
SPECIFICATIONS ......................................Back cover
Accessories
2
1
DATA-
8
7
GND
DATA+
6
5
VCC
1
4
2
3
DATA+
GND
DATA-
VCC
1
2
3
4
5
+5V
GND
USB OC4
USB D4-
USB D4+
EBI A(31)
EBI BUF OE
USB CS PAL
EBI WBE0
USB INT
HST BUS RST
CLK 48MHz USB
USB DIR
USB 1MS
USB SEND
I2C VIDEO SDA
SYS RST
I2C VIDEO SCL
MEM SD1 D(0-15)
MEM SD1 A(0-13)
MEM SD1 DQMH
MEM SD1 DQML
MEM SD1 CAS
MEM SD1 WE
MEM SD1 CS0
MEM SD1 CLK
MEM SD1 D(0-15)
MEM SD1 A(0-13)
MEM SD1 DQML
MEM SD1 DQMH
MEM SD1 CAS
MEM SD1 WE
MEM SD1 CLK
MEM SD1 CS0
MEM SD1 RASMEM SD1 RAS
MEM SD0 CLK MEM SD0 CLK
MEM SD0 D(0-15) MEM SD0 D(0-15)
MEM SD0 A(0-13) MEM SD0 A(0-13)
AV IBM ENCODER AV IBM ENCODER
AV IBM ENCODERAV IBM ENCODER
AV IBM ENCODERAV IBM ENCODER
COMP U
COMP Y
COMP VCOMP V
COMP Y
COMP U
AV IBM
ENCODER CENCODER C
AV IBM
ENCODER YENCODER Y
AV IBM AV IBM
ENCODER CVBSENCODER CVBS
AV IBM AV IBM
SEL A/BSEL A/B
VDEO SWITCH VIDEO SWITCH
VIDEO SWITCH OE VIDEO SWITCH OE
SWITCH SEL A/BSWITCH SEL A/B
ZONEB VIDEO ZONEB VIDEO
SYS RST
EBI D(0-15)
MUX3 BIT2MUX3 BIT2
MUX3 BIT3MUX3 BIT3
MUX3 BIT4MUX3 BIT4
MUX3 BIT5MUX3 BIT5
MUX3 BIT6MUX3 BIT6
IBM GPIO13
RW HALT
RW TMS
RW TDI
IBM GPIO13
RW HALT
RW TMS
RW TDI
RW TDORW TDO
SP1 DTR
ST0 TXD
SP0 DTR
SP1 DSR
SP1 DSR
SP0 DTR
ST0 TXD
SP1 DTR
SP0 DSR
SP0 DSR
SP1 RTS
ST1 TXD
SP0 RTS
EBI D(0-7)
SYS RST
SP1 CTS
SP1 RXD
SP0 RXD
SP0 CTS
SP0 DSR
SP1 DTR
ST0 TXD
SP0 DTR
SP1 DSR
SP1 CTS
SP1 RXD
SP0 CTS
SP1 RTS
SP0 RTS
ST1 TXD
SP0 RXD
MDM USB CS MDM USB CS
SW TIDSP RSTSW TIDSP RST
EBI D(0-15)
EBI BUF D(0-15)
TIDSP RST TIDSP RST
EBI A(15)
EBI A(13-30)
EBI OE EBI OE
EBI R/W EBI R/W
EBI WBE0
EBI A(8-31)
EBI OE
EBI WBE0
EBI R/W
EBI A(16)
EBI A(31)
PWRGOOD
CLK SYS 54MHz
HPNA CS
CLK SYS 54MHz
HPNA CS
54MHz
CLK SYS
HPNA CS
EBI BUF D(0-15)
EBI BUF D(0-7)
BFLASH CS
BFLASH CS
BFLASH CS
BFLASH CS
HST BUS
HST BUS RST
HST BUS RST
USB CS PAL
MDM CS PAL
MDM CS
EBI BUF
EBI BUF OE
EBI BUF OE
MAIN RST
CLK 20MHz PIC
SYSCLK
CLK 27MHz SYSCLK
CLK SYS
CLK 11.2896MHz AUDIO
CLK 54MHz
CLK 54MHz ETHER
ETHER
CLK 48MHz USB
IDE RST
SYS RST
SYS RST
SYS RST
EBI D(0-15)
SPDIF INT
HPNA INT
HPNA INT
ETHER INT
ETHER CS
ETHER INT
ETHER CS
EBI R/W
EBI OE
EBI WBE0
EBI WBE0
EBI WBE0
EBI READY
EBI A(29-31)
MHV RAC CONN
MHV TAC CONN
LINE2 RING
LINE2 TIP
MDM INT
MDM INT
LINE2 TIP
LINE2 RING
MHV TAC CONN
MHV RAC CONN
EBI A(11-31)
ADC REG R
ADC REG L
USB INT
USB SEND
USB 1MS
USB DIR
EBI A(8-31)
+3.3V
+3.3V
+3.3V
+3.3V
PALOERST
+12V
-12V
+5V
+12V
-12V
CLK 27MHz+3.3V
+5V
+3.3V
+5V
-12V
+12V
+3.3V
+2.5V
+5V
+3.3V
+3.3V
+3.3V
PS
OE PAL
OE PAL
3.3V
+3.3V
+5V
+2.5V
+5V
+3.3V
4
USB D4-
USB D4+
5
USB OC4
31
+5V
GND
2
F1
470K
R1
560K
R2
1000P
C2
150u
C1
+
GND
DATA+
DATA-
VCC
MNT2
MNT1
600
FB1
600
FB2
68P
C4
47P
C5
1
C3
1
C6
EBI BUF D(0-7)
+3.3V
+5V
+5V
J26
USB
CONNECTORS
PANEL
BACK
TOP
BOT
J34
J2
USB
INTERFACE
J1
SL11H
USB SUBSYSTEM
IBM VESTA
SDRAM
2 BANKS
DUAL ZONE VIDEO
VIDEO INPUT/OUTPUT
INPUT/OUTPUT
VESTA
SERIAL
PORTS
CONFIG
CLOCKS
POWER &
RESET
BUFFER
SMARTSCM/56 MEMORY
V. 90 MODEM FLASH
HEADERS
DEBUG
MEMORY
FIDUCIALS,
SPARE GATES
MOUNTING HOLES,
BOARD
USB
2
3
4
5
ACEBD
6
7
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list).
indicates safety critical components. For continued protection against risk of fire, replace only with same type and rating fuse(s).
To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably
insulated from the supply circuit) before the appliance is returned to the customer.
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