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1

Model Name Using Similar Mechanism

NEW

DVD

DVD Mechanism Type

CDM74HF-DVBU101//C

Section

Optical Pick-up Name

KHM-310CAB/C2NP

Tape Deck

Model Name Using Similar Machanism

NEW

Section

E Model

HCD-GNZ7D/GNZ8D/GNZ9D

Australian Model

HCD-GNZ9D

The following measured at AC 120, 127, 220, 230 – 240 V,
50/60 Hz
Continuous RMS power output (reference)
Front speaker:

115 + 115 watts
(6 ohms at 1 kHz, 10%
THD)

Center speaker:

50 watts (6 ohms at 1 kHz,
10% THD)

Surround speaker:

50 + 50 watts
(6 ohms at 1 kHz, 10%
THD)

Subwoofer:

170 watts (4 ohms at
100 Hz, 10% THD)

The following measured at AC 120, 127, 220, 230 – 240 V,
50/60 Hz
Continuous RMS power output (reference)
Front speaker:

100 + 100 watts
(6 ohms at 1 kHz, 10%
THD)

Center speaker:

40 watts (6 ohms at 1 kHz,
10% THD)

Surround speaker:

40 + 40 watts
(6 ohms at 1 kHz, 10%
THD)

The following measured at AC 120, 127, 220, 230 – 240 V,
50/60 Hz
Continuous RMS power output (reference)

100 + 100 watts
(6 ohms at 1 kHz, 10%
THD)

Inputs
VIDEO/SAT IN (audio) (phono jacks):

voltage 450/250 mV,
impedance 47 kilohms

VIDEO INPUT VIDEO (phono jack):

1 Vp-p, 75 ohms

VIDEO INPUT AUDIO (phono jacks):

voltage 250 mV,
impedance 47 kilohms

MIC1/MIC2 (phone jack):

sensitivity 1 mV,
impedance 10 kilohms

Outputs
VIDEO/SAT OUT (audio) (phono jacks):

voltage 250 mV,
impedance 1 kilohm

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

, P

R

: 0.7 Vp-p, 75 ohms

2007D04-1

© 2007. 04

– Continued on next page –

(Photo: HCD-GNZ7D)

• HCD-GNZ7D/GNZ8D/GNZ9D are

the tuner, deck, DVD and amplifier
section in MHC-GNZ7D/GNZ8D/
GNZ9D.

2

COMPONENTS  IDENTIFIED  BY  MARK  0  OR  DOTTED  LINE
WITH  MARK  0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN
THE  PARTS  LIST  ARE  CRITICAL  TO  SAFE  OPERATION.
REPLACE  THESE  COMPONENTS  WITH  SONY  PARTS  WHOSE
PART  NUMBERS  APPEAR  AS  SHOWN  IN  THIS  MANUAL  OR
IN  SUPPLEMENTS  PUBLISHED  BY  SONY.

DIGITAL OPTICAL OUT (Square optical connector jack,
rear panel) (HCD-GNZ7D only)
Wavelength

660 nm

PHONES (stereo mini jack):

accepts headphones of
8 ohms or more

System

Compact disc and digital
audio and video system

Laser

Semiconductor laser
(DVD: 

λ=650 nm,

CD: 

λ=790 nm)

Emission duration:
continuous

Frequency response

DVD (PCM 48 kHz):
2 Hz – 22 kHz (

±1 dB)

CD: 2 Hz – 20 kHz (

±1 dB)

Video color system format

Latin American model:
NTSC
Other models: NTSC, PAL

Recording system

4-track 2-channel stereo

Frequency response

40 – 13,000 Hz (

±3 dB),

using Sony TYPE I
cassette

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 ohm unbalanced

Intermediate frequency 10.7 MHz

AM tuner section
Tuning range
Latin American models: 530 – 1,710 kHz (with the

interval set at 10 kHz)
531 – 1,710 kHz (with the
interval set at 9 kHz)

Saudi Arabian model:

531 – 1,602 kHz (with the
interval set at 9 kHz)

Other models:

531 – 1,602 kHz (with the
interval set at 9 kHz)
530 – 1,710 kHz (with the
interval set at 10 kHz)

Antenna

AM loop antenna

Antenna terminals

External antenna terminal

Intermediate frequency 450 kHz

Power requirements
Australian model:

230 – 240 V AC, 50/60 Hz

Saudi Arabian model:

120 – 127 V, 220 V or
230 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector

Indian model:

220 – 240 V AC, 50/60 Hz

Mexican model:

127 V AC, 60 Hz

Thai model:

220 V AC, 50/60 Hz

Other models:

120 V, 220 V or 230 –
240 V AC, 50/60 Hz
Adjustable with voltage
selector

Power consumption
MHC-GNZ9D

400 watts

MHC-GNZ8D

280 watts

MHC-GNZ7D

210 watts

Dimensions (w/h/d)
MHC-GNZ9D

Approx. 280 

× 326 × 400 mm

MHC-GNZ8D/GNZ7D Approx. 280 

× 326 × 380 mm

Mass (excl. speakers)
HCD-GNZ9D

Approx. 14 kg

HCD-GNZ8D

Approx. 12 kg

HCD-GNZ7D

Approx. 11 kg

3

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

The laser diode in the optical pick-up block may suffer electrostatic
breakdown 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.

• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be

damaged by heat.

• 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.

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.

This appliance is
claassified as a CLASS 1
LASER product. This
label is located on the
rear exterior.

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.

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

New part of EEP ROM (IC103) on the DMB10 board or DMB11
board cannot be used. Therefore, if the mounted DMB10 board (A-
1095-784-A, etc.) is replaced, exchange new EEP ROM (IC103)
with that used before the replacement.

4

– BACK PANEL –

GNZ9D: SP

2-582-750-0s

GNZ9D: E3, E15

2-582-750-1s

GNZ9D: E12, E13

2-582-750-2s

GNZ9D: PH

2-582-750-3s

GNZ9D: EA

2-582-750-4s

GNZ9D: TH

2-582-750-5s

GNZ9D: AUS

2-582-750-6s

GNZ9D: E2

2-582-750-7s

GNZ9D: E51

2-582-750-8s

GNZ9D: MX

2-582-750-9s

GNZ8D: SP

2-582-751-0s

GNZ8D: E3, E15

2-582-751-1s

GNZ8D: E12, E13

2-582-751-2s

GNZ8D: PH

2-582-751-3s

GNZ8D: EA

2-582-751-4s

GNZ8D: TH

2-582-751-5s

GNZ7D: SP

2-582-752-0s

GNZ7D: E3, E15

2-582-752-1s

GNZ7D: E12, E13

2-582-752-2s

GNZ7D: PH

2-582-752-3s

GNZ7D: EA

2-582-752-4s

GNZ7D: TH

2-582-752-5s

GNZ7D: E2

2-582-752-6s

PARTS No.

• Abbreviation

E2

: 120 V AC area in E model

E3

: 240 V AC area in E model

E12 : 220-240 V AC area in E model
E13 : 220-230 V AC area in E model
E15 : Iran model
E51 : Chilean and Peruvian model
AUS : Australian model
EA

: Saudi arabia model

PH

: Philippine model

SP

: Singapore model

MX

: Mexican model

TH

: Thai model