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 ©)