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The following measured at 127 V AC,  60Hz (Mexicam model),

 AC 120 – 127 V or 220 – 240 V, 50/60 Hz (Other models) 

AC 220 – 240 V, 50/60 Hz (Singapore, Argentina and Australian models),  

DIN power output (rated): 56 + 56 W (4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference): 70 + 70 W (4 ohms at 1 kHz, 
10% THD)

Inputs

AUDIO IN: Sensitivity 250 mV, impedance of 47 kilohms

Outputs

PHONES (stereo mini jack): accepts headphones with an impedance of 8 
ohms or more
SPEAKER: accepts impedance of 4 ohms

System: Compact disc and digital audio system
Laser Diode Properties  

Emission Duration: Continuous 
Laser Output*: Less than 44.6 

µW

* This output is the value measurement at a distance of 200 mm from the 

objective lens surface on the Optical Pick-up Block with 7 mm aperture. 

Frequency response: 20 Hz – 20 kHz (

±2 dB) 

Wavelength: 780 – 790 nm

FM stereo, FM/AM superheterodyne tuner
FM tuner section:

Tuning range: 87.5 – 108.0 MHz
Antenna: FM lead antenna
Antenna terminals: 75 ohms unbalanced
Intermediate frequency: 10.7 MHz

AM tuner section:

Tuning range

Pan American model: 530 – 1,710 kHz (with 10 kHz tuning interval)

531 – 1,710 kHz (with 9 kHz tuning interval)

Other models: 530 – 1,710 kHz (with 10 kHz tuning interval)
 

531 – 1,602 kHz (with 9 kHz tuning interval)

Antenna: AM loop antenna
Antenna terminals: External antenna terminal
Intermediate frequency: 450 kHz

Power requirements

North American model: 120V AC, 60 Hz
Mexican model: 127 V AC, 60 Hz
Singapore, Argentina and Australian models: 220 V – 240 V AC, 50/60 Hz
Other models: 120 – 127 V or  220 – 240 V AC, 50/60 Hz
Adjustable with voltage selector

Power consumption: 45 watts (HPR90)

50 watts (HPR99XM)

Dimensions (w/h/d) (excl. speakers): Approx. 180 

× 280 × 360 mm 

Mass (excl. speakers): 3.9 kg (HPR90)

4.0 kg (HPR99XM)

Design and specifications are subject to change
without notice.

AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORION:

With 4 ohm loads, both channels driven, from 120 – 10,000 Hz; rated 85 watts

DIN power output (rated): 68 + 68 W (4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference): 85 + 85 W (4 ohms at 1 kHz, 
10% THD)

per channel minimum RMS power, with no more than 10

% total harmonic

North American model

distortion from 250 milliwatts to rated output.

US model

Model Name Using Similar Mechanism

NEW

CD Mechanism Name

DLM5B

Base Unit Name

BU-K6BD83S-WOD

Optical Pick-Up Block Name

KSM-213DCP

2007A05-1
© 2007.01

•

HCD-HPR90 is the amplifier, CD player and
tuner section in CMT-HPR90.

•

HCD-HPR99XM is the amplifier, CD player
and tuner section in CMT-HPR99XM.

Photo: HCD-HPR90

US and foreign patents licensed from Dolby Laboratories.

US Model

Canadian Model

HCD-HPR90/HPR99XM

E Model

Australian Model

HCD-HPR90

2

•

Never reuse a disconnected chip component.

•

Notice that the minus side of a tantalum capacitor may be

damaged by heat.

•

Keep the temperature of the soldering iron around 270 ˚C

during repairing.

•

Do not touch the soldering iron on the same conductor of the

circuit board (within 3 times).

•

Be careful not to apply force on the conductor when soldering

or unsoldering.

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.

 0

0

0

After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage.
Check leakage as described below.

The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA

WT-540A. Follow the manufacturers’ instructions to use these
instruments.

2. A battery-operated AC milliammeter. The Data Precision 245

digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a

VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable.  (See
Fig. A)

1.5 k

Ω

0.15 

µ

F

AC
voltmeter
(0.75 V)

To Exposed Metal
Parts on Set

Earth Ground

3

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

4

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

5

3-1.

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

7

3-2.

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

8

3-3.

Back Panel .......................................................................

8

3-4.

MAIN Board ....................................................................

9

3-5.

AMP Board, POWER Board Section ..............................

9

3-6.

Front Panel Section, CD Mechanical (DLM5B) ............. 10

3-7.

Belt (DLM3A) ................................................................. 11

3-8.

Optical Pick-Up Block .................................................... 11

.............................................................. 12

........................................... 14

6-1.

Block Diagram – CD SERVO Section – ......................... 15

6-2.

Block Diagram – MAIN Section – .................................. 16

6-3.

Block Diagram – AMP Section – .................................... 17

6-4.

Block Diagram
– PANEL, POWER SUPPLY Section – .......................... 18

6-5.

Printed Wiring Board – CD Board – ............................... 20

6-6.

Schematic Diagram – CD Board – .................................. 21

6-7.

Printed Wiring Board – MAIN Board – .......................... 22

6-8.

Schematic Diagram – MAIN Section (1/3) – .................. 23

6-9.

Schematic Diagram – MAIN Section (2/3) – .................. 24

6-10. Schematic Diagram – MAIN Section (3/3) – .................. 25
6-11. Printed Wiring Boards – XM Section (HPR99XM) – ..... 26
6-12. Schematic Diagram – XM Board (HPR99XM) – ........... 27
6-13. Printed Wiring Board – AMP Board – ............................ 28
6-14. Schematic Diagram – AMP Board – ............................... 29
6-15. Printed Wiring Board – PANEL Board – ........................ 30
6-16. Printed Wiring Boards – FL Section – ............................ 31
6-17. Schematic Diagram – PANEL Section – ......................... 32
6-18. Schematic Diagram – FL Board – ................................... 33
6-19. Printed Wiring Board – POWER Board – ....................... 34
6-20. Schematic Diagram – POWER Board – .......................... 35

7-1.

Overall Section ................................................................ 52

7-2.

Front Panel Section ......................................................... 53

7-3.

AMP Board, POWER Board Section .............................. 54

7-4.

CD Mechanical Section (DLM5B) .................................. 55

................................ 56

4

MODEL

PART No.

HPR90: US

2-670-257-0[]

HPR90: CND

2-670-257-1[]

HPR90: E

2-670-257-2[]

HPR90: MX

2-670-257-3[]

HPR90: E51

2-670-257-4[]

HPR90: AR

2-670-257-5[]

HPR90: SP

2-670-257-6[]

HPR90: AUS

2-670-257-7[]

HPR99XM: US

2-670-258-0[]

HPR99XM: CND

2-670-258-1[]

•

Abbreviation
AR

: Argentina model

AUS

: Australian model

CND

: Canadian model

E51

: Chilean and Peruvian models

MX

: Mexican model

SP

: Singapore model

The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.

The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.

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.

The disc table lock function for the antitheft of an demonstration
disc in the store is equipped.

1. Press the  

I

/1

  button to turn the power on.

2. While pressing the

x

button, press the

Z

button until

“UNLOCKED” displayed on the fluorescent indicator tube
(around 5 seconds).

When “LOCKED” is displayed, the antitheft lock is not released by
turning power on/off with the

I/

1

button.

PART No.