ORDER NO. GAD85065548C2 rvice Manual Radio RF- 1650L _ (Black) FM-LW-MW 3 Band Portable Receiver ‘This is the Service Manual for thefollowing 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); 470kHz Power Output: 1.2W...RMS (Max.) Sensitivity: FM; 3uV/50mW output sa ea9, 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
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
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. |
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.
(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.