Sony Car Stereo Xr C440e Xr C450e Xr C440 Xr C450 Manual

							Model Name Using Similar Mechanism NEW
Tape Transport  Mechanism Type
MG-25C-136
US Model
Canadian Model
XR-C450
E Model
XR-C440/C450
SERVICE MANUAL
XR-C440/C450
SPECIFICATIONS
Cassette player section
Tape track 4-track 2-channel stereo
Wow and flutter 0.08% (WRMS)
Frequency response 30 – 18,000 Hz (C440/C450:  US, Canadian)
30 – 20,000 Hz (C450: E, Saudi Arabia)
Signal-to-noise ratioAntenna terminal External antenna connector
Intermediate frequency 10.7 MHz
Usable sensitivity 8 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 65 dB (stereo),
68 dB (mono)
Harmonic distortion at 1 kHz
0.5% (stereo),
0.3% (mono)
Separation 35 dB at 1 kHz
Frequency response 30 – 15,000 Hz
Capture ratio 2 dB (C450: E, Saudi Arabia)
4 dB (C440/C450: US, Canadian)
— Continued on next page — Cassette type Dolby B NR Dolby NR off
TYPE II, IV 67 dB 61 dB
TYPE I 64 dB 58 dB
Tuner sectionFMTuning range US, Canadian model:
87.5 – 107.9 MHz
E, Saudi Arabia model:
50 kHz/200 kHz switchable
87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
XR-C440/C450: US, Canadian Model
FM/AM CASSETTE CAR STEREO
XR-C450: E Model
FM/MW/SW CASSETTE CAR STEREO
Refer to RM-X2S/X3S SERVICE MANUAL (9-960-039-∏)
issued previously for information of remote commander
(RM-X2S) supplied with XR-C440.Photo: XR-C450
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol a are trademarks
of Dolby Laboratories Licensing Corporation.
AUDIO POWER SPECIFICATIONS (US model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
12 watts per channel minimum continuous average power into 4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more than 1% total
harmonic distortion.
Ver 1.1  2001.08
9-925-536-12Sony Corporation
2001H0500-1e Vehicle  Company
C 2001.8Shinagawa Tec Service Manual Production Group 
						

							– 2 –
Flexible Circuit Board Repairing
•Keep the temperature of the soldering iron around 270 ˚ C during
repairing.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering or
unsoldering .
Notes on chip component replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
TABLE  OF  CONTENTS
1. GENERAL
Location of Controls (XR-C440) ....................................... 3
Location of Controls (XR-C450) ....................................... 4
Installation (XR-C440/XR-C450: E, saudi Arabia) ........... 6
Installation (XR-C450: US, Canadian) .............................. 7
Installing the rotary remote (XR-C440) ............................ 8
Connection (XR-C440) ..................................................... 9
Connection (XR-C450) ..................................................... 11
2. DISASSEMBLY............................................................ 14
3. ASSEMBLY  OF  MECHANISM  DECK............. 16
4. MECHANICAL  ADJUSTMENTS......................... 19
5. ELECTRICAL  ADJUSTMENTS
Test Mode .......................................................................... 19
Tape Deck Section ............................................................. 20
Tuner Section (XR-C450: E, Saudi Arabia) ...................... 20
6. DIAGRAMS
6-1. Printed Wiring Board –Main Section– .............................. 23
6-2. Schematic Diagram  –Main Section– ................................ 25
6-3. Printed Wiring Board  –Key Section– (XR-C440) ............ 29
6-4. Schematic Diagram  –Key Section– (XR-C440) ............... 31
6-5. Printed Wiring Board  –Key Section– (XR-C450) ............ 33
6-6. Schematic Diagram  –Key Section– (XR-C450) ............... 35
6-7. IC Pin Function Description .............................................. 39
7. EXPLODED  VIEWS.................................................. 41
8. ELECTRICAL  PARTS  LIST.................................. 45
AM (MW)Tuning range US, Canadian model:
530 – 1,710 MHz
E, Saudi Arabia model:
9 kHz/10 kHz switchable
531 – 1,602 kHz
(at 9 kHz step)
530 – 1,710 kHz
(at 10 kHz step)
SW (C450: E, Saudi Arabia)Tuning range SW tuning interval:
SW1: 2,940 – 7,735 kHz
SW2: 9,500 – 18,135 kHz
(except for 10,140 – 11,575 kHz)
Antenna terminal External antenna connector
Intermediate frequency 10.71 MHz/450 kHz
Sensitivity 30 µV (C440/C450: US, Canadian)
40 µV (C450: E, Saudi Arabia)
Power amplifier section
Outputs Speaker outputs
(sure seal connectors)
Speaker impedance 4 – 8 ohms
Maximum power output 35 W × 4 (at 4 ohms)
General
Outputs Power antenna control lead
Line out
Rear (1)
Front (1) (C450)
Tone controls Bass ±8 dB at 100 Hz
Treble ±8 dB at 100 Hz
Power requirements 12 V DC car battery
(negative ground)
Dimensions Approx. 188 × 58 × 181 mmm
(7 
1/2 × 2 3/8 × 7 1/4 in.)
(w / h / d)
Mounting dimensions Approx. 182 × 53 × 164 mmm
(7 
1/4 × 2 1/8 × 6 1/2 in.)
(w / h / d)
Mass Approx. 1.2 kg (2 lb. 10 oz.)
Supplied accessories Parts for installation and connections (1 set)
Front panel case (1)
Rotary remote
RM-X2S (C440)
Wireless Remote
Commander RM-X40 (C450: E, Saudi Arabia)
Design and specifications are subject to change without notice. 
						

							– 3 –
SECTION  1
GENERALThis section is extracted
from instruction manual.
(XR-C440) 
						

							– 4 –
(XR-C450) 
						

							– 5 –
(XR-C450: E, Saudi Arabia) 
						

							– 6 –
(XR-C440/XR-C450: E, Saudi Arabia) 
						

							– 7 –
(XR-C450: US, Canadian) 
						

							– 8 – 
						

							– 9 –
(XR-C440) 
						

							– 10 –