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E Model

•

STR-K5 is the receiver section in HT-K5.

2006C05-1
© 2006.03

This receiver incorporates Dolby* Digital and Pro 
Logic Surround and the DTS** Digital Surround 
System.

* Manufactured under license from Dolby 

Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are 
trademarks of Dolby Laboratories.

** “DTS” and “DTS Digital Surround” are registered 

trademarks of Digital Theater Systems, Inc.

Power Output

1)

Models of area code SP, E51
(6 ohms 1 kHz, THD 0.7%)
FRONT

2)

:

80 W/ch

CENTER

2)

:

80 W

SURR

2)

:

80 W/ch

(6 ohms 1 kHz, THD 10%)
FRONT

2)

:

110 W/ch

CENTER

2)

:

110 W

SURR

2)

:

110 W/ch

1) Measured under the following conditions:

2) Depending on the sound field settings and the 

source, there may be no sound output.

Inputs (Analog)

Inputs (Digital)

Output (Analog)

Reproduction frequency range:

20 

−

 20,000 Hz

Tuning range

87.5 

−

 108.0 MHz

Antenna

FM wire antenna

Antenna terminals

75 ohms, unbalanced

Intermediate frequency

10.7 MHz

SP, MY

230 V AC, 50 Hz

E51

240 V AC, 50 Hz

SA-CD/CD, DVD, 
VIDEO 1, 2

Sensitivity: 800 mV
Impedance: 50 k ohms

DVD (Coaxial)

Sensitivity: 

−

Impedance: 75 ohms

SA-CD/CD (Optical)

Sensitivity: 

−

Impedance: 

−

SUB WOOFER

Voltage: 2 V
Impedance: 1 k ohm

Tuning range
Models of area code SP
With 9-kHz tuning scale: 531 

−

 1,602 kHz

Models of area code E51
With 10-kHz tuning scale: 530 

−

 1,610 kHz

3)

 

With 9-kHz tuning scale: 531 

−

 1,602 kHz

3)

 

Antenna

Loop antenna

Intermediate frequency

450 kHz

3) You can change the AM tuning scale to 9 kHz or 

10 kHz. After tuning in any AM station, turn off the 
receiver. While holding down TUNING +, press 
?/1. All preset stations will be erased when you 
change the tuning scale. To reset the scale to 10 kHz 
(or 9 kHz), repeat the procedure.

Power requirements

Power consumption

Power consumption (during standby mode)

0.2 W

Dimensions (w/h/d) (Approx.)

430 

× 

145 

× 

296 mm 

including projecting parts 
and controls

Mass (Approx.)

7.0 kg

SP, MY

230 

−

 240 V AC, 

50/60 Hz

E51

120/220/240 V AC,
50/60 Hz

SP, MY, E51

165 W

Design and specifications are subject to change 
without notice.

•

Abbreviation
E51 : Chilean and Peruvian models
MY : Malaysia model
SP

: Singapore model

2

•

Never reuse a disconnected chip component.

•

Notice that the minus side of a tantalum capacitor may be

damaged by heat.

 0

0

The area code of the receiver you purchased is 
shown on the lower portion of the rear panel (see 
the illustration below).

Any differences in operation, according to the area 
code, are clearly indicated in the text, for example, 
“Models of area code AA only”.

CENTER

FRONT

Area code

...................................................................

3

2-1.

Disassembly Flow ...........................................................

4

2-2.

Case .................................................................................

4

2-3.

Front Panel Assy ..............................................................

5

2-4.

KARAOKE Board/AC SELECT Board
(Chilean and Peruvian Models) .......................................

5

2-5.

MAIN Section .................................................................

6

2-6.

DIGITAL Board/MAIN Board ........................................

6

..............................................................

7

4-1.

Block Diagram – AUDIO INPUT Section – ...................

8

4-2.

Block Diagram – MAIN Section – ..................................

9

4-3.

Block Diagram – KARAOKE Section – ......................... 10

4-4.

Block Diagram – PANEL Section – ................................ 11

4-5.

Block Diagram
– AUDIO OUT, POWER SUPPLY Section – ................. 12

4-6.

Schematic Diagram – MAIN Board (1/2) – .................... 14

4-7.

Schematic Diagram – MAIN Board (2/2) – .................... 15

4-8.

Printed Wiring Board – MAIN Board – .......................... 16

4-9.

Schematic Diagram – DIGITAL Board (1/3) – ............... 17

4-10. Schematic Diagram – DIGITAL Board (2/3) – ............... 18
4-11. Schematic Diagram – DIGITAL Board (3/3) – ............... 19
4-12. Printed Wiring Board

– DIGITAL Board (Component Side) – .......................... 20

4-13. Printed Wiring Board

– DIGITAL Board (Conductor Side) – ............................ 21

4-14. Printed Wiring Boards – MIC Section – ......................... 22
4-15. Schematic Diagram – MIC Section – .............................. 23
4-16. Printed Wiring Boards – DISPLAY Section – ................. 24
4-17. Schematic Diagram – DISPLAY Section – ..................... 25
4-18. Printed Wiring Board – KARAOKE Board – ................. 26
4-19. Schematic Diagram – KARAOKE Board – .................... 27
4-20. Printed Wiring Boards – POWER SUPPLY Section – .... 28
4-21. Schematic Diagram – POWER SUPPLY Section – ........ 29

5-1.

Overall Section ................................................................ 39

5-2.

Front Panel Section ......................................................... 40

5-3.

Chassis Section ................................................................ 41

5-4.

MAIN Section ................................................................. 42

................................ 43

Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

Unleaded solder has the following characteristics.

•

Unleaded solder melts at a temperature about 40 

°

C higher

than ordinary solder.

Ordinary soldering irons can be used but the iron tip has to be

applied to the solder joint for a slightly longer time.

Soldering irons using a temperature regulator should be set to

about 350 

°

C.

Caution: The printed pattern (copper foil) may peel away if

the heated tip is applied for too long, so be careful!

•

Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)

than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.

•

Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may

also be added to ordinary solder.

3

This section is extracted from
instruction manual.

A.F.D. qg

D.B.F.B. (button/indicator) 8 
DISPLAY 5

Display 6

ECHO wh

INPUT MODE q;

INPUT SELECTOR qa
IR (receptor) ql

KARAOKE ON/OFF (button/

indicator) wj

KEY CONTROL #/2 4

MASTER VOLUME 9
MEMORY/ENTER qj

MIC 1 (jack) wf

MIC 2 (jack) wd

MIC 1 Tone knobs 

LOW, MID, HIGH 2

MIC 2 Tone knobs 

LOW, MID, HIGH 3

MIC 1 VOL wg

MIC 2 VOL ws

MOVIE qf

MUSIC qd

Music Tone knobs 

LOW, MID, HIGH 7

MUSIC VOLUME qs
SCORE (button/indicator) wa 
TUNING 

−

/+ qk

VOCAL SELECT (button/

indicator) w;

2CH qh
?/1 (power) 1

6

4

2

3

1

w;

wa

qa

qs

q;

wd

wf

wh

5

8

9

ws

wg

wj

ql

7

qd

qf

qg

qh

qj

qk

4

 Follow the disassembly procedure in the numerical order given.

•

This set can be disassembled in the order shown below.

Note 1: The process described in 

 can be performed in any order.

Note 2: Without completing the process described in 

, the next process can not be performed.

Note 3: Illustration of disassembly is omitted.

1

two screws
(BVTP3 

×

 8)

2

two screws
(case 3 TP2)

2

two screws
(case 3 TP2)

3

case

2-2. CASE

(Page 4)

2-5. MAIN SECTION

(Page 6)

2-3. FRONT PANEL ASSY

(Page 5)

2-4. KARAOKE BOARD/AC SELECT BOARD 

(Chilean and Peruvian Models)
(Page 5)

2-6. DIGITAL BOARD/MAIN BOARD

(Page 6)

SET