SHARP R320BD Service Manual

R-320BD

SUPPLEMENTAL SERVICE MANUAL

S5810R320BPD/

MICROWAVE OVEN

MODEL

In the interest of user-safety the oven should be restored to its original condition and only parts identical to those specified
should be used.

WARNING TO SERVICE PERSONNEL: Microwave ovens contain circuitry capable of producing very high
voltage and current, contact with following parts may result in a severe, possibly fatal, electrical shock. (High
Voltage Capacitor, High Voltage Power Transformer, Magnetron, High Voltage Rectifier Assembly, High
Voltage Harness etc..)

R-320BD

This is a supplemental Service Manual for Model R-320BD. This model is quite similar to base
model R-320BB, with only color changing. Use this supplemental manual together with the Base
Model Service Manual (Refer No. is S2805R320BPW/) for complete operation, service informa­tion, etc..

This document has been published to be used for after

SHARP CORPORATION

sales service only.
The contents are subject to change without notice.

R-320BD

PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE
EXPOSURE TO EXCESSIVE MICROWAVE
ENERGY

(a) Do not operate or allow the oven to be operated with the door open.
(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other

microwave source, and make repairs as necessary: (1) interlock operation, (2) proper door closing, (3)
seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening of hinges and
latches, (5) evidence of dropping or abuse.

(c) Before turning on microwave power for any service test or inspection within the microwave generating

compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment,
integrity, and connections.

(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave

generation and transmission systems shall be repaired, replaced, or adjusted by procedures described
in this manual before the oven is released to the owner.

(e) A microwave leakage check to verify compliance with the Federal Performance Standard should be

performed on each oven prior to releasing oven to the owner.

BEFORE SERVICING

Before servicing an operative unit, perform a microwave emission check as per the Microwave
Measurement Procedure outlined in this service manual.
If microwave emissions level is in excess of the specified limit, contact SHARP ELECTRONICS
CORPORATION immediately @1-800-237-4277.

If the unit operates with the door open, service person should 1) tell the user not to operate the oven
and 2) contact SHARP ELECTRONICS CORPORATION and Food and Drug Administration's
Center for Devices and Radiological Health immediately.

Service personnel should inform SHARP ELECTRONICS CORPORATION of any certified unit found
with emissions in excess of 4mW/cm2. The owner of the unit should be instructed not to use the unit
until the oven has been brought into compliance.

PARTS LIST

Note: The parts marked “∆” may cause undue microwave exposure.

The parts marked “*” are used in voltage more than 250V.

REF. NO. PART NO. DESCRIPTION Q'TY CODE

ELECTRIC PARTS

1- 1 QSW-MA110WRE0 2nd interlock switch / door sensing switch 2 AK
1- 2 QFSHDA009WRE0 Fuse holder 1 AH
1- 3 FFS-BA021WRK0 Monitor fuse and monitor switch assembly 1 AL
1- 3 FFS-BA012WRK0
1- 4 RTHM-A078WRE0 Thermal cut-out 125 deg. 1 AL
1- 5 FACCDA077WRE0 Power supply cord 1 AU
1- 6 FH-DZA083WRK0 High voltage rectifier assembly 1 AQ

*

1- 7 RC-QZA236WRE0 High voltage capacitor 1 AU

*

1- 8 RV-MZA267WRE0 Magnetron 1 BL

∆

*

1- 9 RMOTEA355WRE0 Fan motor 1 AU
1-10 QSOCLA021WRE0 Oven lamp socket 1 AH
1-11 RLMPTA030WRE0 Oven lamp 1 AF
1-12 RMOTDA161WRE0 Turntable motor 1 AU
1-13 RTHM-A048WRE0 Thermal cut-out 170 deg. 1 AH
1-14 RTRN-A569WRE0 Power transformer 1 BP

*

1-15 FDTCTA176WRK0 AH sensor assembly 1 AV

2- 1 GCABUA678WRP0 Outer case cabinet 1 AZ
2- 2 GDAI-A261WRW0 Bottom left plate 1 AP
2- 3 GDAI-A286WRW0 Bottom right plate 1 AN
2- 4 GLEGPA019WRE0 Foot 2 AD
2- 5 GLEGPA067WRF0 Leg 1 AE

3- 1 CPWBFA776WRK0 Power unit 1 BD
3- 1A QCNCMA446DRE0 2-pin connector (CN-A) 1 AC
3- 1B QCNCMA422DRE0 9-pin connector (CN-C) 1 AF
3- 1C FW-VZA196DRE0 2P wire harness (WH-1) 1 AD
3- 1D FW-VZA195DRE0 Switch harness A (SH-A) 1 AD
3- 1E FW-VZA197DRE0 Switch harness B (SH-B) 1 AD
3- 1F LHLD-A171WRF0 LED holder 1 AE
C1 RC-KZA087DRE0 Capacitor 0.1 uF 50V 1 AB
C2 VCEAB31VW108M Capacitor 1000 uF 35V 1 AD
C3 RC-KZA087DRE0 Capacitor 0.1 uF 50V 1 AB
C4-5 VCEAB31VW106M Capacitor 10 uF 35V 2 AB
D1-4 VHD11ES1///-1 Diode (11ES1) 4 AB
D5-8 VHD1SS270A/-1 Diode (1SS270ATA) 4 AA
LD1-5 VHPSLZ381A9-3 Light emitting diode 5 AC
Q1-2 VS2SB1238//-3 Transistor (2SB1238) 2 AA
Q3 VSDTD143ES/-3 Transistor (DTD143ES) 1 AC
R1 VRD-B12EF242J Resistor 2.4k ohm 1/4W 1 AA
R2 VRD-B12HF681J Resistor 680 ohm 1/2W 1 AA
R3 VRD-B12HF511J Resistor 510 ohm 1/2W 1 AB
R4 VRD-B12EF270J Resistor 27 ohm 1/4W 1 AA
R5 VRD-B12EF472J Resistor 4.7k ohm 1/4W 1 AA
R6 VRD-B12EF332J Resistor 3.3k ohm 1/4W 1 AA
RY1 RRLY-A076DRE0 Relay (OMIF-S-124LM) 1 AK
RY2 RRLY-A081DRE0 Relay (VRB24) 1 AL
SP1 RALM-A014DRE0 Buzzer (PKM22EPT) 1 AG
T1 RTRNPA111DRE0 Transformer 1 AP
VRS1 RH-VZA032DRE0 Varistor (10G471K) 1 AE
ZD1 VHEHZ161///-1 Zener diode (HZ16-1) 1 AA
3- 2 DPWBFB753WRK0 CPU unit 1 BD
3- 3 FPNLCB391WRK0 Control panel frame with key unit 1 BB
3- 3-1 FUNTKA883WRE0 Key unit 1 AX
3- 3-2 JBTN-B094WRF0 Open button 1 AG
3- 3-3 MSPRCA050WRE0 Open button spring 1 AB
3- 4 PSHEPA588WRE0 LED sheet 1 AE
3- 5 XEPSD30P08XS0 Screw; 3mm x 8mm 4 AA

4- 1 PCUSUA376WRP0 Cushion 1 AG
4- 2 PPACGA084WRF0 TTM packing 1 AF
4- 3 PHOK-A106WRF0 Latch hook 1 AL

∆

4- 4 LBNDKA099WRW0 Capacitor holder 1 AD
4- 5 NFANJA029WRE0 Fan blade 1 AL

Monitor fuse and monitor switch assembly (Interchangeable)

1AH

CABINET PARTS

CONTROL PANEL PARTS

OVEN PARTS

R-320BD

1