Panasonic RQSX77V - PERSONAL STEREO User manual

AD0004074C1
A1
StereoRadioCassette Player
RQ-SX77V
AR10 MechanismSeries
Colour
(S)...............SilverType
Area
(P)...............U.S.A.
<Note>
Please dispose oftheservice manual for Model No.
RQ-SX77V(P)TENTATIVE, OrderNo. AD0002039A1
and use thisservice manual.
SPECIFICATIONS

2000 Matsushita ElectricIndustrial Co., Ltd. All rights reserved.
Unauthorizedcopying and distribution isaviolation oflaw.
1. Accessories
-Batterycharger
(RP-BC156BPY).........................1pc.
-Stereoheadphones
(RFEV711P-KY)..........................1pc.
-Remote controller
(RFEV012P-KS)..........................1pc.
-Rechargeablebattery(withcase)
(RP-BP61PYS11).......................1pc.
-Drycell batterycase
(RFAT0002-H)............................1pc.
-Carring case
(RFC0056-K)..............................1pc.
2. Location ofControls

3. Service Mode
The RQ-SX77Vhas a Service mode designedto helpidentifyfaultyparts inthe event of anerror.
/ This mode is especiallyuseful whenservicing is carriedout.
Items required
-Stereoearphones or stereoheadphones
-Rechargeablebatteryor drycell (R6/LR6, AA, UM-3) housedincase
Service mode functions
1. Unitand stereoearphones test
Thischecks for problemsexisting intheunitor stereoearphones.
2. Amplifiertest
Thistest shouldberun ifan“amplifierfailure”occurredduring
test 1. above.
3.1. Unitand stereoearphones test
Preparations:
1. Removetheunitcase byfollowing “Operation Checks and
ComponentReplacementProcedures”.
2. Plug thestereoearphones intotheheadphones jack.
3. Insertafully-chargedrechargeablebatteryor adrycell (R6/LR6,
AA, UM-3) (housedinbatterycase).
4. Insertcassette tape.
5. Release theholdmode.

Operation switches

3.2. Amplifiertest
This testis requiredifthe amplifieris found to be malfunctioning thorough 3.1. Unitand stereo
earphone test.
Preparations:
See 3.1. Unitand stereoearphone test.

4. Mechanism Block ReplacementProcedure

4.1. Replacing thetapetransportassembly
The tape transportmechanismis suppliedsemi-assembled.
Configuration:
Tape transportmechanismexcluding the headblock assembly, capstanmotorand capstan
belts (1)and (2).
Whenreplacing the tape transportassembly, firstremove the [1]headblock assembly, [2]
motor, [3]capstanbelt(1)and [4]capstanbelt(2)from the assemblyto be replaced, theninstall
these parts <[1]-[4]>onto the replacement assemblysupplied. (Fordetails of the dismantling
procedure, see Operation Checks and Component Replacement Procedures.)

Note:
Afterreplacing, perform tapespeedadjustment.
4.2. Replacing theheadblock assembly
The headblock assemblyis suppliedsemi-assembled.
Configuration:
Headblock assemblywithheadarm spring and pinchrollerarm
assembly(F)and (R).
Theheadarm spring and pinchrollerarm assembly(F)and (R) will
alsobesuppliedseparatelyfrom theheadblock assembly.
Note:
Theheadblock assemblyrequires no azimuthadjustment.
5. Operation Checks and ComponentReplacement
Procedures
-Thissection describes procedures for checking theoperation of
themajor printedcircuitboardsand replacing themain
components.
-For reassemblyafteroperation checks or replacement, reverse the
respectiveprocedures. Special reassemblyprocedures are
describedonlywhenrequired.

5.1. Checking for themainP.C.B.
5.1.1. Checking for themainP.C.B. / (Aside)
-Check themainP.C.B. (Aside) as shownbelow.

5.1.2. Checking for themainP.C.B. / (Bside)
-Followthe(Step1) -(Step5) ofitem5.1.1.
-Check themainP.C.B. (B side) as shownbelow.