Hitachi D-E25 - Specifications; Disassembly; Cassette door; Upper cover

D-E25 |
SPECIFICATIONS
Semi-conductors :
ICs: 3
Transistors : 17
Diodes : 13(U), 14(C)
15(FS, BS, AU, W)
LEDs: 14
Track System : 4 track 2 channel stereo
Tape : Cassette tape (C-30, 60, 90)
Tape Speed : 4.75cm/s
Recording System and
Bias Frequency : AC bias, 85 kHz
Erasing System : AC erase
‘Erase Ratio : 65 dB or more (at 1 kHz)
Frequency Response :
ER/UD (NOR): 20 Hz~15 kHz
30 Hz~14 kHz (+3 dB)
30 Hz~14 kHz *
EX/SX (CrO2): 20 Hz~16 kHz
30 Hz~15 kHz (+3 dB)
30 Hz~15 kHz*
ME (Metal) : 20 Hz~17 kHz
30 Hz~16 kHz(+3 dB)
30 Hz~ 16 kHz*
S/N (Signal to Noise Ratio) :
Wow and Flutter :
0.05% (WRMS)
0.17%*
Input Sensitivity and Impedance :
Microphone :
Line in:
DIN (Record/Playback) :
Output Level:
Output Load Impedance :
Line out:
DIN (Record/Playback) :
Headphone :
Distortion :
Crosstalk :
Channel Separation :
Power Supply :
Power Consumption :
Dimensions :
Weight :
Motor :
Heads :
* According to DIN 45 500
DISASSEMBLY
Dolby NR OFF : 58 dB (Weighted A; Reference
3% THD Metal Tape) —
57 dB*
Doiby NR ON: 66 dB (Weighted A, Reference
3% THD Metal Tape)
65 dB*
(D) F3x10 © F3x10
(A) BT3x10 BT3x14
1. Cassette door
Depress the eject button to open the cassette door. Lift
up the cassette door to remove it.
2. Upper cover
Remove A) (four) screws.
3. Bottom cover
Remove ®), © (two) screws.
0.3mV, 300 ohms~ 5k ohms
75mV, 50k ohms or more
0.35mV, 3.3k ohms
(FS, BS, AU, W)
500 mV
50k ohms or more
50k ohms or more
(FS, BS, AU, W)
8 ohms ~ 2k ohms
1.2% (1 kHz, 160 nwb/m)
60 dB or more (at 1 kHz)
30 dB or more {at 1 kHz)
AC 120V, 60 Hz (U, C)
AC 100-110V/115-127V/
200-220V/230-250V,
50/60 Hz(W) ~~
AC 220V, 50 Hz (FS)
AC 240V, 50 Hz (BS, AU)
8W
410(H)X 435 (W)X 201(D)mm
2.8kg
Electronically controlled DC motor
Metal SL Record/playback head
Three-gap ferrite Erase head
(E) F8x10(BLACK) (OD) F3X10
4. Front panel
"4
(F) BT3x12
1) Remove two knobs (Record level).
2) Remove ©, ©). &) (six) screws.
5. Cassette chassis
Remove ©) (two) screws.