Sony wm fx 833

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WM-FX_833

SERVICE MANUAL

Tourist Model
E Model

Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation

DOLBY and the double-D symbol [1] are trademarks of
Dolby Laboratories Licensing Corporation

Model Name Using Similar Machanism NEW

Tape Transport Mechanism Type MT-WMEXeaa-t 12

SPECIFICATIONS
Tape player section and general Dimensions
Frequency response (In NR switch oft) Approx. |08.6x78.4x23,4 mm (w/h/d)
3048.000 Hz Weight
Output Approx. [45 g (Main unit)

Headphones (Q REMOTE jack)
Load impeadance 8-300 ohms
Power output
4mW + 4mW at DC operation
Power requirements
1.5V DC
Rechargeable battery (NC-6WM), 1.2 V. GOOmAh. Nl-Cd One R6
(size AA) battery
Battery life (Approx. hours)
Rechargeable NC-6WM

Fully charged
Playback 9
Radio/TV reception 9

Sony alkaline LR6 (WM)
Playback 33
Radio/T V reception 29

Sony R6P (SR)

Playback 9
Radio/TV reception 9

Rechargeable NC-6WM
Sony alkaline LR6 (WM)
Used together

Playback 40
Radio/1 V reception 36

Approx. 240 g(1ncl. Headphones wuh remote control, Rechargeable
battery NC-oWM. Tape (C-GOHF)

Radio section
Frequency range
Tourist model
FM :7&90MH2
AM : S31-l.7lOkHz
TV : Ir|2ch (Except Korean model)
Korean model (Area setting : Eur)
FM: 87.5-108MH2
AM : SSl-l.602kHz

Design and specifications are subject to change without notice,

RADIO CASSETTE PLAYER
S O N'Y®

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TABLE OF CONTENTS

Specifications 1
1. GENERAL

Location and Function of Controls ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 3
2. SERVICE NOTE .................................................... 5

3. DISASSEMBLY
31. Case Assy Removal
3«2. Audio Board Removal
3-3. Cassette Lid Assy, Tuner Board Removal
3-4, Mechanism Deck Removal iiiiiiiiiiiiiiiiiiii

4. ADJUSTMENTS
4-1. Mechanical Adjustments
4-2. Electrical Adjustments .,

5. EXPLANATION OF ICTERMIANLS.n.......l..n.l.l...i.l. 12

6. DIAGRAMS
6-]. Printed Wiring Boards (Tuner Section) .
6-2. Schematic Diagram (Tuner Section)
6-3. Schematic Diagram (Audio Section) .
6-4. Printed Wiring Boards (Audio Section) .

7. EXPLODED VIEWS
7-1l Cassette Lid. Case Section ........................................ 29
7-2. Audio Board Section ................................................. 30
7-3. Mechanism Deck Section (MT-WMEX633-112).W 31

8. ELECTRICAL PARTS LIST ........................................ 32

Flexlble Circuit Board Repairing

~ Keep the temperature of the soldering iron around 270°C during
repairing.

0 Do not touch the soldering iron on the same conductor of the cir-
cuit board (within 3 times)

- Be careful not to apply force on the conductor when soldering or
unsolderingi

Notes on chip component replacement

0 Never reuse a disconnected chip component.

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