Hitachi TPQ-115 Service Manual
Transistor stereo tape player
(0
PLAY
BACK
TRANSISTORS
THERMISTORS
DIODES
CARTRIDGE
TAPE
TAPE
FREQUENCY
AUDIO
SPEAKER
OUTPUT
INPUT
POWER
POWER
DIMENSIONS
WEIGHT....
ACCESSORIES
SPECIFICATIONS
SYSTEM
•
2SC281
2SC281
2SC458
2SB367 X
2.
13D27
X 4 .
1S310 x
4 .
• •
SPEED
CHANGE
SYSTEM
•
RANGE •
OUTPUT
•
•
IMPEDANCE
•
IMPEDANCE
SUPPLY
CONSUMPTION
(6)
,
TRANSISTOR STEREO
MODEL
SERVICE MANUAL
No. 224
• 8 track,
4 channels
Pre. Amp.
Pre.
Amp.
• AF.
Amp.
Driver
• Power
Amp.
Temperature
Compensator
• Rectifier
• • Stereo
8 tracks
3% ips
• Automatic
or Manual
Push
13,000Hz
14W (integrate)
7'
X
5"
P.M.
x
2
8 ohms
at SP Jack
8 ohms at Headphone
Jack
• 10K ohms at Aux.
Input
AC
120V
60Hz
or 230V
•
• 50W
Player
X
X
Speaker
• Player
11 lbs
Speaker
Box 4 lbs.
80z.
Patch
cord
HITACHI
Hitachi,
Ltd. Tokyo Japan
TAPE PLAYER
TPQ-115
Button
System
Jack
50Hz
1158
X 2
1969
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Summary of Contents for Hitachi TPQ-115
- Page 1 HITACHI Hitachi, Ltd. Tokyo Japan TRANSISTOR STEREO TAPE PLAYER MODEL TPQ-115 SERVICE MANUAL 1969 No. 224 SPECIFICATIONS PLAY BACK SYSTEM • • 8 track, 4 channels TRANSISTORS 2SC281 Pre. Amp. Pre. Amp. 2SC281 • AF. Amp. 2SC458 Driver 2SB367 X •...
- Page 2 MODEL TPQ-115 SERVICE MANUAL CONTROLS CONNECTIONS CARTRIDGE DOOR TAPE CHANNEL CANNEL SELECTOR INDICATOR SELECTOR PILOTLAMP HEADPHONE JACK TREBLE ON-OFF SWITCH & BASS CONTROL CONTROL VOLUME CONTROL BALANCE CONTROL Fig. POWER CORD SPEAKER INPUT JACKS JACKS Fig. DISASSEMBLY Removal Chassis. Remove nine screws holding chassis as shown in Fig.
- Page 3 MODEL TPQ-115 SERVICE MANUAL CHASSIS HOLDINNG SCREWS Fig. SHIELD CIRCUIT BOARD HOLDING SCREWS Fig.
- Page 4 MODEL TPQ-115 SERVICE MANUAL To take the output transistor. 5 and 6, The side surface of the chassis is utilized as the radiation plate of the output transistor. Referring Figs. take off the output transistor. INSULATION TERMINAL PLATE INSULATION COLOR...
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Page 5: Check And Repair
MODEL TPQ-115 SERVICE MANUAL ADJUSTMENT Adjusting the Head Height Height of the reproduction head must coincide exactly with the height of the recorded track (1—8) ADJUSTMENT SCREW on the tape. The head height is adjusted rotating the adjustment screw (shown in Fig. - Page 6 MODEL TPQ-115 SERVICE MANUAL Troubles of tapes or irregular conditions due to users' careless operation are classified as listed in the following table. Table Cause Trouble Checking method Crosstalk Recorded sound track width tape Replace the cartridge with or three...
- Page 7 MODEL TPQ-115 SERVICE MANUAL MODEL TPQ-115 SERVICE MANUAL Tape speed is Grease in the bearing congealed, due to use exceeding Replace bearing. Tape speed is Dust or Oil adhered to the belt surface causes slip between Clean belt with retarded.
- Page 8 MODEL TPQ-115 SERVICE MANUAL CIRCUIT DIAGRAM TH I Q5,Q6 13D-27 SIRI—4 2SC458(C) 2SC458(C) 2SB367(A) TEMPERAT 1S310X4 PRE. AMP. PRE.AMP. AMP. DRIVER. POWER. AMP. COMPENSATOR RECTFIRE CD047 R201 R202 100K R203 R204 R205 SIRI s IR2 Sl-l 220V c 85V 8822...
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Page 9: Board Diagram
MODEL TPQ-115 SERVICE MANUAL CIRCUIT BOARD DIAGRAM Q106,.-N SIRS sa-EN01D COIL TAPE SWITCH MOTOR SWITCH 113 cu TRACK SWITCH PILOT. LAMP BLOT LAMP. R'28 RAY UCK EO HEAD Al-D(e.TAPE CHANGE—OVER HEnPHONE SWITCH JACK AUX•-.TAPE BALANCE BASS TONE TREBLE TONE CONTROL... -
Page 10: Parts View
MODEL TPQ-115 SERVICE MANUAL MODEL TPQ-115 SERVICE MANUAL MECHANICAL PARTS VIEW 0 000 o ooo 0 000 0 00 0 00 —14 —... - Page 11 MODEL TPQ-115 SERVICE MANUAL REPLACEMENT PARTS ymbol tock ymbol tock Description Description 05520101 Same SiR1 1S310 CAPACITORS: 04410581 Same as SiRI 1S310 1,101 0252811 Electrolytic TRANSFORMERS: 2, 102 0248724 Ceramic 3, 103 027411 Mylar 0441058 Driver Same as C2 0248724...
- Page 12 MODEL TPQ-115 SERVICE MANUAL ymbol tock Y m bol tock Description Description 8711404 Screw—3mmØ X 4mm head 6311641 Adjust spring 8813124 Washer—3mm spring 7504741 Adjust screw sub ass'y 8811 Washer—3mm 7174881 Head plate sub ass 'y adjusting plate mounting 7174861...
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