Hitachi FT-4000 User Manual

HITACHI
SERVICE MANUAL
FT-4000
SPECIFICATIONS
Circuitry FT-4000 AM/FM 2-band stereo tuner
FT-4000L MW/LW/FM 3-band stereo tuner
2 ICs, 8 transistors (1 FET},
19 diodes (1 LED) (FT-4000)
21 diodes (1 LED) (FT-4000L)
Semi-conductors
@ FM SECTION
Frequency range 88 — 108 MHz
Usable sensitivity Mono: 10.3 dBf (1.8 uV) (IHF),
1.2 uV (DIN)
50 dB Quieting sensitivity HE) Mono: 17.2 dBf (4 uV)
{FT-4000) Stereo: 37.2 dBf (39.8 nV)
Signal-to-noise
ratio
(FT-4000)
Mono:
75
dB,
Stereo:
68
d8
Signal-to-noise ratio(DIN}(FT-4000L)Mono: 68 dB, Stereo: 64 dB
Harmonic distortion (|HF}
100 Hz Mono: 0.2".,, Stereo: 0.3%
1 kHz Mono: 0.1%, Stereo: 0.25%
6 kHz Mono: 0.3%, Stereo: 0.45%
Frequency response
Capture ratio
Alternate channel selectivity (JHF)
(+300 kHz)
1.2 dB
75 dB (FT-4000)
: 60 dB (FT-4000L)
Image rejection (98 MHz) 50 dB
IF rejection (98 MHz) 80 dB
Spurious rejection (98 MHz} 80 dB e
AM suppression ratio (65 dBf} 50 dB
Stereo separation (1 kHz) 46 dB
Sub-carrier suppression 46 dB
Antenna input impedance 300 ohms balanced type,
75 ohms unbalanced type
60 dB (FT-4000)
5 pV
SCA rejection
Muting threshold
30 Hz — 12 kHz (+0.5 dB,-1.5 dB) @
FT - 4000
FT-4000L
English
Deutsch
Frangais
No. 169
FT-4000L
@ AM SECTION
Frequency range 530 — 1,605 kHz
Usable sensitivity (S/N 20 dB) 12 nV (IHF}, 300 uV/m (Ferrite antenna)
Selectivity 35 dB
Signal-to-noise ratio 53 dB (input: 50 mV/m)
Image rejection 50 dB (at 1,000 kHz}
{F rejection 38 dB (at 1,000 kHz)
Spurious rejection 50 dB (at 1,000 kHz)
Harmonic distortion(FT-4000) 0.8% (input: 5 mV/m, 30% mod.)
@ LW SECTION (FT-4000L)
Frequency range 150 kHz — 350 kHz
Usable sensitivity (S/N 20 dB) 800 pV/m (Ferrite antenna)
Image rejection 35 dB
IF rejection 38 dB
Selectivity 38 dB
Signal-to-noise ratio 35 dB (input 5 mV/m}
AUDIO SECTION .
Output level/impedance FM (100% dev. fixed): (550 mV/4.8 kohms)
FT¥-4000 am (30% mod. fixed) : (135 mV/4.8 kohms)
MW (30% mod. fixed}: (135 mV/4.8 kohms)
FT-A000L | wy (30% mod. fixed): (130 mV/4.8 kohms}
GENERAL
Power requiremenis FT-4000 AC 120 V 60 Hz, ~220 V 50/60 Hz,
~240 V 50/60 Hz
~110—120 V/220—240 V 50/60 Hz
~ 220 V 50/60 Hz, ~ 240 V 50/69 Hz
10W
FT-4000 435 (W) x 110 (H) x 272 (D) mm
FT-4000L 435 (W) x 110 (H) x 288 (D) mm
3.5 kg (7.7 Ibs.)
FT-4000L
Power consumption
Dimensions
Weight
Specifications and designs may be changed without notice for improvement
FEATURES
1. Dual Gate Mos FET for High Quality FM Tuner
2. High Selectivity and Low Distortion IF Amplifier Using IC and 3
Ceramic Filters
3. Quadrature Detection
4. Phase-Locked Loop for FM/MPX Circuit
. FM Mode/Muting Circuit
MPX Noise Filter Circuit
. A Ceramic Filter, IC in AM (MW/LW) Tuner (FT-4000L)
. A Ceramic Filter, [C in AM Tuner (FT-4000)
. Two Extra-Wide Meters and a Large-sized Fly-wheel Tuning knob
Onna
AM/FM STEREO TUNER
May
1979

Hitachi FT-4000 Specifications

General

Brand	Hitachi
Model	FT-4000
Category	Tuner
Language	English

Summary

Product Specifications

FM/AM/LW Tuning Specs

Details sensitivity, selectivity, and distortion for all tuning bands.

Disassembly and Replacement

Alignment Procedures

FM Tuner Alignment

Detailed steps for aligning the FM tuner section, including cautions.

AM Tuner Alignment

Detailed steps for aligning the AM tuner section, including cautions.

Replacement Parts List

Front and Rear Panel Controls

Front Panel Overview

Identification of front panel switches, knobs, meters, and indicators.

Rear Panel Connections