ORDER NO. GAD85065548C2

rvice Manual Radio

RF- 1650L _ (Black)

FM-LW-MW 3 Band Portable Receiver

‘This is the Service Manual for the following areas.

[Z| For all European

areas except United ~ Kingdom.and

Brame

--*For United mneaea | LE]. | - For ee

m™ SPECIFICATIONS | | ae General: | Radio Section: | | | Power Requirement: AC; (Z][F]..220V, 50Hz : Radio Frequency Range: FM; 87.5~108MHz *

ee | 3 ee 240V, 50Hz ‘ LW; 150~285kHz (200~1060m) Battery; 6V (four UM-2, “C” size = ~ MW; 520~1610 MHz (577~186 m)

| batteries) Intermediate Frequency: FM; 10.7MHz Power Consumption: AW p [Z|[F] ..AM (LW/MW); 455kHz

pateiotes SW AM (LW/MW); 470 kHz Power Output: 1.2W...RMS (Max.) Sensitivity: FM; 3uV/50mW output

sa ea 9, Bh, ~ 1.0W...MPO (-3dB Limit sens) | Speaker: a 10cm PM Dynamic Speaker (3) LW; 178uV/m/50mW output Output: - _ _Earphone/External Speaker; 3+80/63.5 | | — . MW; 89nV/m/50mW output Dimensions: — 266mm(W)x1438mm(H)x81mm(D) | oa | Weight: | 1.2kg without batteries

Design:and specifications are subject to change without notice. |

Panasonic ee eee

RF-1650L ie

- @ BandSelector(BANDSELECTOR) _ @ Tuning Control (TUNING) | © Radio Switch (RADIO) @ Volume Control (VOLUME) @ Tone Seiect Button/indicator (TONE)

-@ Loudness Button/Indicator (LOUDNESS) @ Tuningindicator(TUNING) =

- © Built-in Speaker [10cm/3Q]),

. @TelescopicAntenna | -. @® Earphone/External Speaker Jack (IMP 3-80 € <j) $3.5 @ACSocket(ACIN~) | @BatteryCompartment =

Se aS

ons =~

eee | Pe \ [Ie

te Te ames ere ameter tne A A cr pruttararatnan tse punsaamararanan denim miarettrrterrashaiiennai

—, —s

RF-1650L RF-1650L

Rib A _ /\

Ser ee A] Wi

Bo ee i a ———

fo WS

Fig. 7

1

Front Cabinet _

| Screw (3X12)MM ......cceeeeee ees isu taeeae Parr err ( =) bo.

(3x30)

1

1

2,3

Dial Shassis (#1) Screw (3x30)mm

>) Band Switch Lever (*2)

Power Supply Circuit Board NO

Screw (3x12)mmM ...........5- Atenas aatacaeaee Mibeaaivea tag Main Circuit Board

PA Oe cestnet a darammueeet auae alee ve er cuedhaetena whac tat ante (N)x2

Remove the handle both in the direction of arrow. - .

a Band Knob Remove the ribs in the direction of arrows. |

8 oto. pointer in the direction of

* 1. If the double-sided tape on the back of the Dial Scale its not adhesive qualities, replace it.

— (e) oo; &

oi

—ti “J

— | se | oo oO)

_*2. Note that they may be tightly engaged.

m HOW TO REPLACE | (Dial shassis) 3 = ae a (Cabinet)

During installation, simultaneously fit in A and A’. During installation, simultaneously fit in B and B’.

Fig. 9 | Fig. 10

4turns

3

MEASUREMENTS AND ADJUSTMENTS | | | es all European areas [E] ...... For United Kingdom. m@ ALIGNMENT INSTRUCTION except United Kingdom and France. gt eceeer For France.

READ CAREFULLY BEFORE ATTEMPTING ALIGNMENT

5. Set radio switch to ON. | 6. Set power source voltage to 6V DC. 7. Output of signal generator should be no higher

than necessary to obtain an output reading.

1. Set volume control to minimum.

2. Set loudness switch to OFF.

3. Set tone switch to OFF. |

4. Set band switch to LW, MW or FM.

1 LW, MW and SW ALIGNMENT | ‘SIGNAL GENERATOR or

Bane SWEEP GENERATOR CONNECTIONS | FREQUENCY

[ZF]

INDICATOR (ELECTRONICS VOLTMETER or SCOPE)

M-IF ALIGNMENT

RADIO DIAL SETTING REMARKS ADJUSTMENT

A Fashion loop of

3 hg ee <p ee 1 Sill of non- Output meter T2 (AM 1st IFT) Adjust for maximum ; : erference. (on/ across voice coil T3 (AM 2nd IFT) output signal into loop of 30% Mod. | about 600 kHz) se | ies receiver. at 400Hz .

| | | Tuning capacitor

LW | " | 9097 kHz Tuning capacitor fully open.

(4) LW 0” | 150 kHz

L8 (LW OSC ” : Coil)

CTS (LW OSC Trimmer)

Adjust for maximum | | ” | (#1) L6 (LW output. Adjust L6 by Tune to signal. | ANT Coil)

moving coil bobbin along ferrite core.

(2)~(5). MW-RF ALIGNMENT

Tuning capacitor L9 (MW OSC Adjust for maximum | 511 kHz , | | fully closed. | Coil) output.

Tuning capacitor on : CT6 (MW OSC

Adjust for maximum 550 kHz output. Adjust L7 by

1,500 kHz | "

moving coil bobbin

Cement antenna bobbin with wax after completing alignment.

* a Adjust for maximum CT3 (LW ANT output.

Repeat steps — 285 kHz

Trimmer)

(*1) L7 (MW ANT Coil)

Tune to signal.

along ferrite core.

Adjust for maximum output. Repeat steps

(6)~(9).

CT4 (MW ANT Trimmer)

al — 4 —

Vv Be sure to fold at the (W) mark so that mark is on the outside.

E

Wa

RF-1650L RF-1650L

SCHEMATIC DIAGRAM 2 3 4 rs) 6 7 | 8 9 | 10 11 | 12 13

BE MAIN CIRCUIT SECTION

QI (2SC829-B)

IF AMP

WQ Cc

<0) <=}

~O ra"

Rd 330K

D6~9

R27 SOK ne — Q2 | |

R19 22K

C54, 0,0 ~~

Ade} A IN n0T) 4 TS | A

C58, 0.04 3

C56, 0.04 y 00000

& 4 3 U

y or

0» EARPHONE/ | EXT SPEAKER

= = WS

ites

oT is 63v3 ie

As

[el @ Ol "fiers:

VR{ SOK (D)

MN

‘4 Hy) of { a : oh ie = . 38 }

| | pence

(RVITA7358P) [LNZZ2RP) (28016840) 2845640 (RVIBAS27) (2SC945-Q) [RVDRD4R3EB) eee aaa FM FRONT END TUNING/TONE/ LED DRIVER [2SA722-S) PRE/POWERAMP REGULATOR REGULATOR CIRCUIT SECTION

LOUDNESS IND. : LED DRIVER (4.3V) Notes: : | | | , 1. $1-1~S1-6: fae switch in “FM” position. 10. Important safety notice e.g. Q1

..FM, 3...LW, 4...MW) - Components identified by AV mark have special 2SC2412NRTB, LNSTB——Production parts number 2. $2-1, S2-2: ae ON/OFF switch in “ON” position. | characteristics important for safety. [2SC2412] ———_—_——————_Supply parts number 3. 53-1, S3-2: LOUDNESS ON/OFF switch in “OFF” position. When replacing any of these components, use only * The supply parts number is described alone in the 4. S4-1, S4-2: TONE HIGH/LOW switch in “HIGH” position. manufacturer’s specified parts. replacement parts list. 5. Sd: AC/DC. IN select switch in “DC IN” position. 11. Described in schematic diagram are two nipes of numbers; 6. VR1: Volume control. — the supply parts number and production parts number for * This schematic diagram may be modified at any time with the 7. The mark ( ¥ ) shows test point e.g. W=test point 1. transistors and dioes. development of new technology. 8. DC voltage measurement are taken with electronics voltmeter

from negative terminal of battery. eon ene ena ——— +8 Voltage Line < _>...FM position,( _)...AM position | | ==> Radio (FM) Signal Line

9. Battery current: No Signal ..............cccccceeeeeeeeeeeee ees 32mA

Maximum output (radio) .................. 290mA .

TELESCOP ANTENNA 5

2

ELECTRICAL PARTS LIST

Numbering System of Resistor

Example ERD 25 F J

Type Wattage Shape Tolerance

ERX 2 AN

Type Wattage Shape Tolerance

Resistor Type

ERD: Carbon

ERG: Metal Film

YeaWJ: +5%

Yo W V4 W 1W

ve W

ERX: Metal Film

ERQ: Fuse Type Metal RRD: Carbon

(Chip Type)

REPLACEMENT PARTS LIST

Important safety notice Components identified by A mark have special char- actristics important for safety. When replacing any of these components, use only manufacturer's specified parts.

Qt

101

Value

(1009) 2R2

Value

(2.2Q)

EE MAIN CIRCUIT

CIRCUIT BOARS AND WIRING CONNECTION DIAGRAM

Numbering System of Capacitor

Example ECKD

T < pe

FCEA

Type

Capacitor

ECEA: Electrolytic ECCD: Ceramic

ECKD: Ceramic

1H

Voltage

50

Voltage

Type

102

Value

(1000 pF) M

Peculiarity

Voltage

ECEA Type

1A 1C

ECQM: Polyyester 1E

ECOP: Polyproylene 1V 1H

50 ECET: Electrolytic ECEAOIUON: Non Polar 25

Electrolytic 16 QCU CO: Ceramic (Chip Type) ECUX: Ceramic (Chip Type)

¢ mark stands for that the parts are supplied in MESA.

Z] ......Far all European areas except United Kingdom

and France.

[E] ......For United Kingdom.

[F] ......For France.

Z

Tolerance

R47

Value

(0.47 uF)

F

Peculiarity

Tolerance

OJ : 6.3 V]2H : 500 V DC| C : +0.25pF +5% +10% +80%,

—20% +100%,

-—0%

RF-1650L

CAPACITORS

C 9, 12, 36, 40 C 11, 20, 31 C 13, 15, 16, 61 C 14, 17, 54, 55,

56, 57 C 18, 19, 23, 24,

26

C21 C 22 C25 C27 C 28 C 32 C 33 C 34 C 35 C 37

C 38 C 39 C 41, 62 C 42 C 43

ECCD1H150KC ECCD1H680K ECKD1H102KB ECCD1H180KC ECCD1H040CC ECCD1H220KC ECCD1H470KC ECKD1H103MD

ECKD1H103ZF

ECFT1E223MD

ECEA1JU470 ECEA1EU4R7 ECFT1C683MD ECEA1JU221 ECFT1C153MD ECCD1H120KC ECQP2A221JZ ECQP2A151JZ ECQP2A361JZ ECKD1H223ZF

ECFT1C473MD ECEA1HUR22 ECKD1H102MD ECFT1C104MD — ECEA1HUOR1

RF-1650L

SPEAKER 10cm (4°) 3Q

ECEA1AU471 ECEA1JU330 ECEA1JU101 ECCD1H101K ECEA1JU471

ECEA1AU222 ECEA0JU102 ECCD1H221K ECKD1H103MD

RESISTORS

R 2,6 R 3, 5, 28 . R4 R8 RQ R 10, 15 R 11 R 12, 13, 14 R 18 R19

R 20 R 22 R 23 R 26 R 27 R 29

ERD25FJ471 ERD25FJ470 ERD25TJ334 ERD25TJ473 ERD25FJ222 ERD25FJ103 ERD25FJ102 ERD25FJ331 ERD25TJ223 ERD25FJ121

ERD25FJ181 ERD25TJ183 ERD25FJ271 ERD25TJ153 ERD25TJ224 ERD25FJ101

OOOO wh —

°D2

Ref. No. Part No.

INTEGRATED CIRCUITS

CAUTION

pS NN EN NN NR ee)

RISK OF ELECTRIC SHOCK Please do not.

touch this portion. AC voltage line.

Part Name & Description

RViTA7358P IC (FM FRONT END) AN7220A IC (AM MIX/OSC, FM/AM

7 IF/DET, AMP) RViBA527 IC (PRE/Power AMP)

TRANSISTORS

2SC829-B Transistor, Si

2SC1684Q Transistor, Si

2SA722-S Transistor, Ge

2SC945-Q Transistor, Si

DIODES & RECTIFIERS

RVDRD4R3EB_ Zenner Diode (Si) D 3, 4,5 LN222RP LED (Tuning, Tone, Loudness

Ind.)

D 6, 7, 8,9 RVD1SR35 Diode (Si)

COILS

L3 RLQY18S3 Choke Coil L4 RLD4Y44 Antenna Coil, FM

L5 RLD4Y43 OSC Coil, FM L 6,7 RLF6D154 Antenna Coil, LW/MW

L8 RLO1B12 OSC Coil, LW LQ RLO2B108 OSC Coil, MW L 10 RLQZD101K Choke Coil

TRANSFORMERS

T1,4 RLi4B153 IFT, FM 1st/2nd

oo

Ref. No.

T T

°T 5 [E] °T 5 [ZI[F] RLT5i2G3A

2 3

Part Name & Description Part No.

RLi2B216 IFT, AM 1st

RLi2B217 IFT, AM 2nd

RLT5i2E1A Power Transformer A Power Transformer A.

VARIABLE CAPACITORS

VC 1, 2, 3, 4 RCV4RC2RA s+ Variable Capacitor/with

Trimmer Capacitor

(CT 1, 2, 4, 6)

TRIMMER CONDENSERS

CT 3,5 RCVTZ30F Trimmer Capacitor

VARIABLE RESISTOR

*VR1 EWALFOC10D54 Volume Control, 50k0 (D)

CERAMIC FILTER

CF 1 RVFSFE107MSZ Ceramic Filter (10.7 MHz)

SWITCHES __..

eS 1 RSS3F14Z Slide Switch (Band Selector)

$2 ESB6484 Push Switch (Radio) S 3, 4 ESB64513 Push Switch (Loudness/Tone).

JACKS

J1 RJJ1D20Y Jack, Eeaphone/Ext. Speaker J 2 (S5) [E]

RJJ1A5Z Jack, ACINA J 2 (S5) [Z][F]

RJJ1A4Z Jack, ACINA

| RF-1650L RF-1650L

m@ FM ALIGNMENT

~ SIGNAL GENERATOR or INDICATOR BAND SWEEP GENERATOR RADIO DIAL (ELECTRONICS ADJUSTMENT REMARKS

SETTING VOLTMETER or SCOPE) _

FM-IF ALIGNMENT

High side thru. Connect vert. | 0.001 uF to test 10.7 MHz Point of non- amp. of scope to a, point WY , Negative ae interference. (on/ | test point YW. T1 (FM 1st IFT) side to test point ©. about 90 MHz) Negative side to

Adjust for maximum amplitude. (Refer to fig. 2).

test point YW.

Adjust for maximum T4 (FM 2nd IFT) amplitude.

(Refer to fig. 3).

FM-RF ALIGNMENT

Variable Output meter 86.2 MHz | capacitor across otey ~ oil) (¥2) se Hea

fully closed. voice coil. p

Connect to test point Variable FM W through FM dummy 109. 2 MHz | capacitor CT2 (FM OSC

antenna. Negative | fully open. Trimmer)

| side to test point ©. 4 (FM ANT @| rm "| sown | runetosigna | [OMAN yf

| | (*2) Adjust for maxi- CT1 (FM ANT mum output.

(6); FM 106 MHz | Tune to signal. Trimmer) Repeat steps | (3)~(6).

(* 2)

B ALIGNMENT POINTS |

(Please refer to Circuit Board and Wiring Connection Diagram which is located test points)

MW ANT LW ANT MW ANT LW ANT FM ANT FM ANT

Three output responses will be present; proper tuning is the center frequency.

550 kHz 285kHz | 500kHz I50kHz 9OMHz \O6MHz

LWOSC

ee * fe ae Eee ae — ae " 1O9.2MHz |

|| | CT2

aes OSC S| .2oM Hz Fj 2

BAND SW : AM Ist

455kHz S2

RADIO SW

(Push: ON)

10.7 MHz

VRI o~ VOLUME | |

FM 1st 10.7 MHz |

| : | . | | FM2nd MWOSC MWOSC S4 LW OSC S3 . HOE 1O.7MHz = 165QkHz SIIkHz Tonesw. _-S8kHZ ~~ LoupDNESS [74 ] [cre] [co | (Push:HiGH) [Le | sw

| (Push:ON)

Fig. 1 Dial chassis

m@ DIAL POINTS (0 Point adjustment) |_| 1. Turn the Variable Capacitor to fully counter- 7 | Pe

clockwise. — “Slot 2. Position the pointer over the slow. ; (O)

Fig. 4 a 9 go 43

K28, 29,30 K4

CABINET PARTS LOCATION

REPLACEMENT PARTS LIST

* Important safety notice

Components identified by A mark have special

characteristics important for safety.

Notes: Part numbers may difer according to shipping

When replacing any of these components, use

only manufacturer’s specified parts.

* © mark stands for that the parts are supplied in

MESA.

* The color name in parentheses ( ) in the (F]

pails list is the color of that part.

°K 1 [E]

eK 1 [Z)[F] °K 2 [E] °K 2 [Z)[F] °K 2-1 °K 2-2 °K 2-3 °K 3 °K 4 °K 5

°eK6 e“K7 °“K8 K 9 K 10

°K 11 eK 12

RYMF1650LZE8

RYMF1650LZK8 RYFF1650LZEK RYFF1650LZKS RJC20003Z RJC60005Z RJC92001Z RZAF1650LZKS RYHF1650LZKS RYTF1650LZKS

XEARK162EJY RAS10P23Z RUB386Z RDS4060A RUD16Z RDA104Z RDD414Y

°K 13 K 14

Front Cabinet Ass’y (Black) °K 15 A Front Cabinet Ass’y (Black) °K 16 [E]

destination. Be sure to refer to the below

destination codes before ordering replacement

parts.

[Z] For all European areas except United

Kingdom and France.

RDR54Z RDZ05A1 RKK288Z

RKD684Y

RKD684Z RKX165Z RDP289Z RBC743Z

RBD281Z RBD328Z RBN704Z RJT865Z RMP239Z

XSN26 + 6

XWA26B

Rear Cabinet Ass’y (Black) A | ° 16 [ZI[F] Rear Cabinet Ass’y (Black)

Battery Spring (+) K 17 Battery Spring (—) °K 18 Battery Spring (+, —) °K 19 Dial Chassis Ass’y (Black) Hanldie Ass’y (Black) °K 20 Radio Button Ass’y (Black) °K 21

eK 22

Telescopic Antenna K 24 Speaker (eK 25 Lever, Band Switch

Spring, Dial Drum K 26 Spring, Boss

Bracket, Dial Pointer K 27 Dial Drum . K 28 XSN3 + 25BNS

For United Kingdom.

Aare! For France.

Roller, Dial

Cord, Dial Battery Cover (Black)

Scale, Dial (Black)

Scale, Dial (Black)

Spacer, Handie

Dial Pointer

Push Knob, Loudness/Tone

(Black)

Knob, Band Selector (Black)

Knob, Volume (Black)

Knob, Tunning (Black) ~ Terminal, Earth © LED Holder

Screw @2.6x6

(Dial Drum M’tg)

Washer $2.6 (Dial Drum M’tg) Screw @3 x 25 (Antenna M’tg)

Part Name & Description Part Name & paacrintion: Part Name & Description

_CABINET PARTS K 29 K 30 K 31

K 32

K 33

A 1 [E] A 1 {2][F]

°A2

oP 1 °P2 P3

K26, 27

XWA3BFN Washer $3 (Antenna M’tg) XWG3FN Washer ¢3 (Antenna M’tg) XTB3+16CFZ Tapping Screw @3~x 16

(Black) (Rear Cabinet M’tg) © XTB3+30BFN Tapping Screw @3~x 16

(Dial Chassis M’tg) XTV3 + 12G Tapping Screw @3x 12

(P.C.B. Speaker M’tg)

__ACCESSORIES _ RJA43Z Power Cord A

RJA20Z Power Cord A RQX4645Z Operating Instructions

PACKINGS

RPK2087Z _ Gift Box RPN9508Z Pad Completion (L, R) XZB36X30A04 Protection Cover

MESA ww ZIELF Printed in Japan ©)