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2011I33-1

© 

2011.09

•  HCD-GZR7D/GZR8D/GZR9D are the 
  tuner, deck, DVD and amplifi er section 
 in 

MHC-GZR7D/GZR8D/GZR9D.

Photo: HCD-GZR8D

DVD
Section

Model Name Using Similar Mechanism

HCD-GNZ777D/GNZ888D

DVD Mechanism Type

CDM74HF-DVBU101//C

Optical Pick-up Name

KHM-313CAB/C2RP

Tape Deck
Section

Model Name Using Similar Machanism

HCD-GNZ777D/GNZ888D

The following measured at AC 230 V, 50/60 Hz (Russian model)
The following measured at AC 127, 220, 240 V, 50/60 Hz 
(Saudi Arabian model)
The following measured at AC 120, 220, 240 V, 50/60 Hz (Other models)

Power output (rated):  100 W + 100 W (6 

 at 1 kHz, 1% THD)

RMS output power (reference)
Front speaker:  

180 W + 180 W (per channel at 6 

, 1 kHz, 

 10% 

THD)

Center speaker:  

60 W (6 

 at 1 kHz, 10% THD)

Surround speaker: 

60 W + 60 W (per channel at 6 

, 1 kHz, 

 10% 

THD)

Subwoofer:  

180 W (6 

 at 80 Hz, 10% THD)

Power output (rated):  100 W + 100 W (6 

 at 1 kHz, 1% THD)

RMS output power (reference)
Front speaker:  

180 W + 180 W (per channel at 6 

, 1 kHz, 

 10% 

THD)

Center speaker:  

60 W (6 

 at 1 kHz, 10% THD)

Surround speaker:  

60 W + 60 W (per channel at 6 

, 1 kHz, 

 10% 

THD)

Power output (rated):  100 W + 100 W (6 

 at 1 kHz, 1% THD)

RMS output power (reference): 
 

180 W+ 180 W (per channel at 6 

, 1 kHz, 

 10% 

THD)

VIDEO/SAT VIDEO IN (phono jack): 
 

1 Vp-p, 75 ohms

VIDEO/SAT AUDIO IN L/R (phono jacks): 
 

voltage 250/450 mV, impedance 47 kilohms

 MIC 1/MIC 2 (phone jacks): 
 

sensitivity 1 mV, impedance 10 kilohms

– Continued on next page –

0  OR  DOTTED  LINE  

0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  

VIDEO OUT (phono jack):
 

max. output level 1 Vp-p, unbalanced, Sync 

 

negative, load impedance 75 ohms

S VIDEO OUT (4-pin/mini-DIN jack): 
 

Y: 1 Vp-p, unbalanced, Sync negative, 

 

C: 0.286 Vp-p, load impedance 75 ohms

COMPONENT VIDEO OUT: 
 

Y: 1 Vp-p, 75 ohms 

 

P

B

/C

B

: 0.7 Vp-p, 75 ohms

 

P

R

/C

R

: 0.7 Vp-p, 75 ohms

DVD DIGITAL OUT (MHC-GZR7D only) 
(Square optical connector jack, rear panel):
 

Wavelength 660 nm

PHONES (stereo mini jack):
 

accepts headphones of 8 ohms or more

SUBWOOFER OUT (MHC-GZR8D/GZR7D only):
 

Voltage 1 V, impedance 1 kilohms

FRONT SPEAKER:
MHC-GZR9D: 

Use only the supplied speaker SS-GZR9D.

MHC-GZR8D/GZR7D:
 

Use only the supplied speaker SS-GZR8D.

SURROUND SPEAKER (MHC-GZR9D/GZR8D only):
 

Use only the supplied speaker SS-RSX9D.

CENTER SPEAKER (MHC-GZR9D/GZR8D only):
 

Use only the supplied speaker SS-CTX9D.

SUBWOOFER (MHC-GZR9D only):
 

Use only the supplied subwoofer SS-WGV9D.

Supported bit rate  

MP3 (MPEG 1 Audio Layer-3): 32 – 320 kbps

 

WMA: 48 – 192 kbps

 

AAC: 48 – 320 kbps

Sampling frequencies 
 

MP3 (MPEG 1 Audio Layer-3): 32/44.1/48 kHz

 

WMA: 44.1 kHz

 

AAC: 44.1 kHz

 (USB) port: 

Maximum current: 500 mA

System: 

Compact disc and digital audio and video system

Laser Diode Properties
 

Emission duration: Continuous Laser Output*: 

 

Less than 44.6

μW 

 

*This output is the value measurement at a distance 

 

of 200mm from the objective lens surface on the 

 

Optical Pick-up Block with 7mm aperture.

Frequency response  DVD (PCM 48 kHz): 2 Hz – 22 kHz (±1 dB)
 

CD: 2 Hz – 20 kHz (±0.5 dB)

Video color system format
 Russian 

model: 

PAL

 Latin 

American 

model: 

NTSC

 

Other models: 

NTSC and PAL

Tape deck section
Recording system: 

4-track 2-channel, stereo

Tuner section
FM stereo, FM/AM superheterodyne tuner

FM tuner section
Tuning range: 

87.5 – 108.0 MHz (50 kHz step)

Antenna: FM 

lead 

antenna

Antenna terminals: 

75 

Ω unbalanced

Intermediate frequency:
 10.7 

MHz 

AM tuner section
Tuning range: 
Russian and Saudi Arabian models:
 

531 – 1,602 kHz (9 kHz step)

Latin American model:
 

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

 

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

Australian model: 

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

 

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

Other models: 

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

 

530 – 1,610 kHz (with 10 kHz tuning interval)

Antenna: 

AM loop antenna

Antenna terminals: 

External antenna terminal

Intermediate frequency:
 450 

kHz

General
Power requirements
Russian model: 

AC 230 V, 50/60Hz

Australian model: 

AC 230 – 240 V, 50/60 Hz

Thai model: 

AC 220 V, 50/60 Hz 

Saudi Arabian model: AC 120 – 127, 220, 230–240 V, 50/60 Hz, 
 

adjustable with voltage selector

Other models: 

AC 120, 220, 230 – 240 V, 50/60 Hz, 

 

adjustable with voltage selector

Power consumption
MHC-GZR9D: 270 

W 

 

(Russian model: 0.5 W in Power Saving Model)

MHC-GZR8D:  

240 W

MHC-GZR7D:  

170 W 

 

(Russian model: 0.5 W in Power Saving Model)

Dimensions (w/h/d) (excl. speakers) 
MHC-GZR9D: 

Approx. 280 × 325 × 415 mm

MHC-GZR8D/GZR7D:
 

Approx. 280 × 325 × 382 mm

Mass (excl. speakers)
MHC-GZR9D:  

Approx. 12 kg

MHC-GZR8D:  

Approx. 11.5 kg

MHC-GZR7D:  

Approx. 10.5 kg

Design and specifi cations are subject to change without notice.

UNLEADED  SOLDER
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 viscous (sticky, less prone to fl ow) 
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.

NOTES  ON  CHIP  COMPONENT  REPLACEMENT
• 

Never reuse a disconnected chip component.

• 

Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.

FLEXIBLE  CIRCUIT  BOARD  REPAIRING
• 

Keep the temperature of 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.

Laser component in this product is capable of emitting radiation 
exceeding the limit for Class 1.

This appliance is classifi ed as 
a CLASS 1 LASER product.
This marking is located on the 
rear exterior.

CAUTION
Use of controls or adjustments or performance of procedures 
other than those specifi ed herein may result in hazardous radia-
tion exposure.

The laser diode in the optical pick-up block may suffer electrostat-
ic 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 fl exible board is easily damaged and should be handled with 
care.

NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused 
on the disc refl ective surface by the objective lens in the optical 
pickup block. Therefore, when checking the laser diode emission, 
observe from more than 30 cm away from the objective lens.

GZR9D: RU

3-285-875-0

[]

GZR9D: E3, E15

3-285-875-1

[]

GZR9D: EA

3-285-875-2

[]

GZR9D: SP

3-285-875-4

[]

GZR9D: PH

3-285-875-6

[]

GZR9D: E2

3-285-875-7

[]

GZR9D: AUS

3-285-875-8

[]

GZR9D: AR

3-285-875-9

[]

GZR8D: E3, E15

3-291-798-1

[]

GZR8D: EA

3-291-798-2

[]

GZR8D: E12

3-291-798-3

[]

GZR8D: SP

3-291-798-4

[]

GZR8D: TH

3-291-798-5

[]

GZR8D: PH

3-291-798-6

[]

GZR7D: RU

3-291-799-0

[]

GZR7D: E3, E15

3-291-799-1

[]

GZR7D: EA

3-291-799-2

[]

GZR7D: E12

3-291-799-3

[]

GZR7D: SP

3-291-799-4

[]

GZR7D: TH

3-291-799-5

[]

GZR7D: PH

3-291-799-6

[]

• Abbreviation
  RU 

: Russian model

  E3 

: 240V AC area in E model

  E15 

: Iran model

  EA 

: Saudi Arabia model

  SP 

: Singapore model

 TH  : 

Thai 

model

  PH 

: Philippines model

  E2 

: 120V AC area in E model

 AUS : 

Australian 

model

 AR  : 

Argentina 

model

  E12 

: 220 – 240V AC area in E model