Panasonic SBHF-850-G, SBPT-850-G Service manual

SB-HF850G

SB-PT850G

Colour

(K)... Black Type

ORDER NO. MD0705030CE

Speaker System

Specification

ype 2 way, 2 speaker system (Bass reflex)

Speaker unit(s) Impedance 6 Ω

1. Full range 6.5 cm cone type

2. Full range 6.5 cm cone type

Input power (IEC) 250 W* (Max)

Output sound pressure 83 dB/W (1.0 m)

Cross over frequency 5kHz

Frequencyrange 79 Hz to 25 kHz (-16 dB)

95 Hz to 22 kHz (-10 dB)

Dimensions (W x H x D) 252 x 1123 x 235 mm

Mass 3.8 kg

Notes :

1. Specifications are subject to change without notice.

Mass and dimensions are approximate.

2. Total harmonic distortion is measured by the digital spectrum analyzer.

* : Rating with low-cut filter equipped amplifier.

SB-HF850G

1 System Combination

1.1. System Breakdown

Note :

The table below show the breakdown for speaker combinations used in main unit systems.

System SC-PT850WGN-K Music center SA-PT850GN-K

Front speaker Surround speaker SB-HS851G-K Center speaker SB-HC550E-K

Subwoofer SB-HW550E-K Digital Tx & Rx system SH-PT850GN-K

SB-PT850G-K consists of SB-HF850G-K (x2), SB-HS851G-K (x2), SB-HC550E-K (x1).

SB-HF850G-K

SB-HF850G

2 Assembling and Disassembling

“ATTENTION SERVICER”

Some chassis components may have sharp edges. Be careful when disassembling and servicing.

1. This section describes procedures for checking the operation of the major printed circuit boards and replacing the main components.

2. For reassembly after operation checks or replacement, reverse the respective procedures.

Special reassembly procedures are described only when required.

3. Select items from the following index when checks or replacement are required.

4. Refer to the Parts No. on the page of “Parts Location and Replacement Parts List” (Section 6), if necessary.

Below is the list of disassembly sections

• Disassembly of Upper box assembly

• Disassembly of Upper rear cabinet

• Disassembly of Woofer 1 (SP1)

• Disassembly of Woofer 2 (SP1)

• Disassembly of Terminal jack

• Disassembly of Lower box assembly

• Disassembly of Lower rear cabinet assembly

• Disassembly of Lower base stand assembly

2.1. Disassembly flow chart

The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing.

To assemble the unit, reverse the steps shown in the chart as below.

SB-HF850G

2.2. Disassembly of Upper box assembly

Step 1: Remove the white (+) and blue (-) wires.

Step 2: Pull out the speaker cable from the groove.

2.3. Disassembly of Upper rear cabinet

Step 1: Remove upper box assembly.

Step 2: Remove 10 screws.

Step 3: Remove screw.

Step 4: Remove the upper box assembly unit as arrow shown.

Step 3: Detach the gray (-) and red (+) wires.

2.4. Disassembly of Woofer 1 (SP1)

SB-HF850G

2.5. Disassembly of Woofer 2 (SP1)

Step 1: Remove upper box assembly.

Step 2: Remove upper rear cabine t (Follow step 2).

Step 3: Lift up the upper rear cabine t as arrow shown.

Step 4: Detach black (+) and black (-) wires.

Step 1: Remove upper box assembly.

Step 2: Remove upper rear cabine t (Follow step 2).

Step 3: Lift up the upper rear cabine t as arrow shown.

Step 4: Detach red (+) and blue (-) wires.

Step 5: Remove 4 screws.

Step 6: Remove woofer 1 (SP1) as arrow shown.

Step 5: Remove 4 screws.

Step 6: Remove woofer 2 (SP1) as arrow shown.

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