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SHARF'
SERVICE MANUAL
S8206R4A54PJZ
MICROWAVE
OVEN
Photo
R-4A54
R-4A54B
In interests of user-safety
the oven should
be restored to its original
condition
and only manufacturer
original
spare parts must be used.
(RD16701U)
This is a supplemental
Service Manual
for Modei
R-4A54
etc.
Those models are quite similar to Base Model
R-4A53
(Refer No. is S7106R3A53PJZ).
Use this supplemental
manual together
with the Base Model Service Manual.
Refer to the Base Model
Service Manual
for complete
operation,
service information,
etc.
CRD17101lJ1
TABLE
OF CONTENTS
GENERAL
IMPORTANT
INFORMATION
Page
......................................................................................................
1
CAUTION,
MICROWAVE
RADlATlON,WARNING
......................................................................................
1
PRODUCT
SPECIFICATIONS
.........................................................................................................................
2
APPEARANCE
VIEW
........................................................................................................................................
3
SERVICING
........................................................................................................................................................
4
TEST PROCEDURE
...........................................................................................................................................
5
TOUCH
CONTROL
ASSEMBLY
COMPONENT
.....................................................................................................................
8
REPLACEMENT
AND ADJUSTMENT
PROCEDURE
.....................................................
WIRING
DIAGRAM
13
.......................................................................................................................................
PICTORIAL
DIAGRAM
15
..................................................................................................................................
CONTROL
PANEL CIRCUIT
17
.........................................................................................................................
PRINTED WIRING
DIAGRAM
19
PARTS LIST
.....................................................................................................................
20
....................................................................................................................................................
21
SHARP
CORPORATION
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Summary of Contents for Sharp R-4A54
- Page 1 SHARF’ SERVICE MANUAL S8206R4A54PJZ MICROWAVE OVEN R-4A54B Photo R-4A54 In interests of user-safety the oven should be restored to its original condition and only manufacturer original spare parts must be used. (RD16701U) This is a supplemental Service Manual for Modei R-4A54 etc.
- Page 2 R -4A54 R-4A54B...
- Page 3 ‘ j.” j.” )‘\ + )‘\ + ‘9 ‘9 This Manual has been prepared to provide Sharp Corp. Service Qb\\c ,‘a, Qb\\c ,‘a, Ed P ,,1 Ed P ,,1 -‘r r- “, -‘r r- “, i es “-e+-I.i i es “-e+-I.i 1* &...
- Page 4 R -4A54 R -4A548 PRODUCT SPECIFICATIONS SPECIFICATION ITEM DESCRIPTION / 240 Volts(Australia)/230-240 Volts(New Zealand) Power Requirements / 50 Hertz I Single phase, 3 wire earthed Power Consumption / 1400w 1 750 watts nominal of RF microwave energy (AS 2895 1986) Power Output ’...
- Page 5 R -4A54 R-4A540 APPEARANCE VIEW 1. Ventilation openings 8. Touch Control Panel 2. Oven lamp 9. Digital readout 3. Hinges 10. Waveguide cover 4. Safety door latches 11. Access cover for oven lamp replacement 5. See through door 12. Power supply cord 6.
- Page 6 If the water remains cold lated screwdriver. carry checks re-examine con- nections to the component being tested. Sharp recommend that wherever possible fault-finding is carried out with the supply discon- nected. It may in, some...
- Page 7 R -4A54 R-4A54B TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST MICROWAVE OUTPUT POWER (2 LITRE WATER LOAD) The following test procedure should be carried out with the microwave oven in a fully assembled condition (with ou?er case fitted). Microwave output power from the magnetron can be measured by way of substitution, i.e.
- Page 8 R -4A54 R-4A54B TEST PROCEDURES (CONT’D) PROCEDURE LETTER COMPONENT TEST orie and watt is used. When P(W) heating works for t(second), approximately P x t/4.1 87 calorie AT (“C) is generated. On the other hand, if the temperature of the water with V(ml) rises during this microwave...
- Page 9 R-4A54 R-4A54B TEST PROCEDURES (CONT’D) PROCEDURE LETTER COMPONENT TEST 1 ooog T2”C Heat up for 49 sec. (RD82u03Ul PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD (PWB) IS OPEN. To protect the electronic circuits, this model...
- Page 10 R-4L454 R -4A54B TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL ACL Circuit The touch control section consists of the following units as shown in the touch control panel circuit. A circuit to generate a signal which resets the LSI (1) Key Unit to the initial state when power is supplied.
- Page 11 9 -4A54 R-4A54B DESCRIPTION OF LSI LSI( IZA430DR) The I/O signais of the LSI(IZA430DR) are detailed in the following table. PIN NO. 1 SIGNAL 1 D10 / OUT Diqit selection sinnal. Refer to the touch control panel circuit about the relation between signals and digits.
- Page 12 R-4A54 R-4A54B I l/O PIN NO. / 11 f SIGNAL / R12 i OUT Seoment data signal. Key strobe signal. Signal applied to touch-key section. A pulse signal is input to R23, Signal similar to Dl 1. R32 terminal while one of G7 line keys on key matrix is touched.
- Page 13 1 SIGNAL j AVSS PIN NO. j 27 / IN Connected to VC. 1 SIGNAL 1 RESET PIN NO. 1 28 I IN Auto clear terminal. Signal is input to reset the LSI to the initial state when power is supplied. Temporarily set to “H”...
- Page 14 R -4A54 R-4A54B SERVICING 1. Precautions Handing Electronic For those models, therefore, check and repair all the controls (with the sensor-related ones Components included) of the touch control panel while This unit uses CMOS LSI in the integral part of the keeping it in contact with the oven proper.
- Page 15 R -4A54 R-4A54B COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE POWER TRANSFORMER REMOVAL 5. Disconnect the high voltage wire of H.V. rectifier CARRY OUT 3D CHECKS Remove the fan motor assembly from the oven re- assembly from the power transformer. ferring to “FAN MOTOR ASSEMBLY”. 6.
- Page 16 R -4A54 R-4A54B POWER SUPPLY CORD REPLACEMENT (FOR AUSTRALIA MODEL) 5. Wind the conductors of Blue and White wires each Removal CARRY OUT 3D CHECKS. other. Disconnect the brown wire of the power supply 6. Insert the stripped wire leads into the connector cord from the fuse holder.
- Page 17 R-4A54 R -4A54 B SCHEMATIC j NOTE: CONDITION OF OVEN. 1. DOOR CLOSED. , 2. CLOCK APPEARS ON DISPLAY. zi *Ok z’: cy~ul &I I-IL i-z& t 2-p 7 ok-0 I”= T - - CON '-v w :--, Aal> I kg B"w"...
- Page 18 R -4A54 R-4A54B SCHEMATIC NOTE: CONDITION OF OVEN / 1. DOOR CLOSED. 2. CLOCK APPEARS ON DISPLAY. c&L 2&s ;;:r zu-im >a I= E Ei & (0’ i -.--~.L$3i i!Fi i ii f w ii <rnO IL $ !$jE 2 8 c %-”...
- Page 19 ------ __.._ D _..- ~.._.. CI - .-_-__.-_- --.. ---. -..w -..- LIVE POWER SUPPLY CORD TC: THERMAL CUT-OUT TEMP. FUSE 145c (OVEN) 15oc (MB) --f RED CONTROL PANEL RED jq_nb CN-B F: LEE CN-B COM.b!!d , r%--- SW4: STOP SWITCH CN-A pz-iq l-@s2iTI...
- Page 20 R -4A54 R -4A54 B ’ c...
- Page 21 -. - --.. --___ _._ _ _.___. __ I _ _ -.__-._ I--.- _--~..-._.---1 IC-1 ILA430DFl NOT SpECIFIELt 1?.%270~ SPECIFEU. 0 OlhF/lBV Figure S-3. Control panel circuit ---- --- ---- __-.----- --- -. . . -_- .---- -.._ -. _- _ - __..._ ___.
- Page 22 R -4A54 R-4A54B -,F-“, Figure S-4. Printed Wiring Board...
- Page 23 Noise filter (For New Zealand Modelj CABINET PARTS 2- 1 FHNG-A172WRTO Lower oven hinge assembly 2- 2 GCABUA310WRPO Outer case cabinet (R-4A54) 2- 2 GCABUA358WRPO Outer case cabinet (R-4A54Bj MHNG-A280WRTO Upper oven hinge ;I ; PCOVPA249WRPO Turntable motor cover 2- 5...
- Page 24 R-4A54 R-4A54B NntP vnltnne tc~nnlid nartt rr*” nroator than Yin\/ ,.-..a I.” .V..YJV “~y”“Y . ..Y p,“..” ““I”. I”. h”” “I” REF. NO. PART NO. DESCRIPTION Q’TY CODI vSDTAl14ES/-3 Transistor (DT~ll4Es) Q31,32 VSDTD143ES/-3 Transistor 1DTD143ES) VRD-B12HF432J Resistor 4.3kf2 1,'2W VRD-B12HF102J...
- Page 25 7- 6 LX-CZ0052WREO Special screw; 7- 7 LX-EZA036WREO Special screw; 7- 8 XOTSE40P08000 Screw; M4 x 8 (R-4A54) XOTSF40P08000 Screw; M4 x 8 (R-4A54B) 7- 9 XFPSD30P06000 Screw; M3 x 6 zinc plated steel 7-10 XFPSD40P08KOO Screw; M4 x 8 zinc plated...
- Page 26 R-4A54 R-4A54B CABINET PARTS...
- Page 27 R -4A54 R-4A54B CONTROL PANEL PARTS 1’ DOOR PARTS...
- Page 28 % (SPADBA 524 WREO) CABINET COVER (SDAKHA003WREO) (iUA54B) DOOR PROTECTION SHEET ---Y %-(SPADA 178WREOt DOOR PAD %%(SPADFAOGl WREOJ TRAY PAD % GPADFA207WREO) (R-4A54B, Australia) % SPAKCB931WREo tR-4A54, New Zealand) 3ic Not replacement Items. ‘92 SHARP CORP. (08K0.83E) Printed in Japan...